please refer to fig1 , which shows a first embodiment of a traveling case with a functional lid according to the present invention . the traveling case 1 includes an upper and a lower case body 2 , 3 . the two case bodies 2 , 3 have a common pivot 7 , so that the two case bodies 2 , 3 can be opened or closed . in this case , the position of the pivot 7 is defined as the rear side of the case bodies 2 , 3 . the rear side of the lower case body 3 is defined to include a left portion 31 and a right portion 32 . the front side of the lower case body is disposed with a handle 8 for users to carry the traveling case with a functional lid . in implementation , the upper case body 2 also can be replaced with an upper lid to form a traveling case . the upper and lower case bodies 2 , 3 are respectively a rectangular casing provided with an opening . a storage space 21 , 33 is respectively formed in each case body . two fasteners 34 are disposed at a front periphery of the inner surface of the lower case body 3 . a first zipper strip 35 is sewn to a rear periphery of the inner surface of the lower case body 3 . a second zipper strip 41 is sewn to a rear end of a lid plate 4 . the second zipper strip 41 is connectable with the first zipper strip 35 . two engageable pieces 42 are disposed at a front end of the lid plate 4 and are arranged corresponding to the two fasteners 34 . thereby , the lid plate 4 is detachably connected to the upper periphery of the inner surface of the lower case body 3 . besides , when the lid plate 4 is placed to cover the lower case body 3 , the two engageable pieces 42 can be fastened with the two fasteners 34 so as to have the lid plate 4 press and position the objects in the lower case body 3 . in implementation , the lid plate 4 can be connected to the inner surface of the upper case body 2 in a similar manner . the lid plate 4 is provided with at least a positioning part on an upper surface thereof for positioning the objects onto the upper surface of the lid plate 4 . in implementation , each positioning part 43 is a sheet 45 provided with a zipper 44 . the peripheries of the sheet 45 are connected with the peripheries of the lid plate 4 . besides , a storage space 46 is formed between the sheet 45 and the lid plate 4 . thereby , the objects can be located and positioned in the storage space 46 . as shown in fig2 , the positioning part also can be a plurality of grooves 47 or of elastic for positioning 3c products ( such as notebook computers ). moreover , as shown in fig3 , the positioning parts also can be a long sheet . one end of the long sheet is connected with one end of the lid plate 4 . thereby , when a suit of clothes 9 is placed on the lid plate 4 and the long sheet , the suit of clothes 9 can be positioned on the upper surface of the lid plate 4 by folding the long sheet . besides , the upper peripheries of the inner surface of the lower case body 3 are sewn with a third zipper strip 36 and the third zipper strip 36 is located below the first zipper strip 35 . an inner lining 5 is bag - shaped and has an internal surface provided with a storage bag . the upper peripheries of the interior lining 5 are disposed with a fourth zipper strip 51 . the fourth zipper strip 51 is connectable with the third zipper strip 36 . thereby , when the third zipper strip 36 is connected with the fourth zipper strip 51 , the interior lining 5 can be connected to the inner surface of the lower case body 3 . if it is required to clean the interior lining or replace the interior lining with a new one , the original interior lining can be removed by detaching the third zipper strip 36 from the fourth zipper strip 51 . in implementation , the interior lining 5 also can be directly sewn to the inner surface of the lower case body 3 ; or the interior lining can be connected to the inner surface of the upper case body 2 and located within the storage space 21 of the upper case body 2 . please refer to fig4 , where a second embodiment of the present invention is demonstrated . the second embodiment is different from the first embodiment in following aspects : where the first zipper strip 35 is sewn to the peripheries of the inner surface of the lower case body 3 ; the peripheries of the lid plate 4 is provided with a second zipper strip 41 that is connectable with the first zipper strip 35 . consequently , when the first zipper strip 35 and the second zipper strip 41 are completely connected with each other , the objects ( especially small or personal items ) can be securely stored in the space above the interior lining 5 and below the lid plate 4 without being fallen out . please refer to fig5 , where a third embodiment of the present invention is demonstrated . in this embodiment , the first zipper strip 35 includes a front section 351 and a rear section 352 . the front end of the front section 351 is a front free end 353 whereas the rear end of the rear section 352 is a rear free end 354 . when the first zipper strip 35 is sewn and encircles spirally onto the upper peripheries of the inner surface of the lower case body 3 , the rear section 352 of the first zipper strip 35 is extended above the front section 351 . besides , the front free end 353 of the front section 351 is located on the right portion 32 of the rear end of the lower case body 3 and the rear free end 354 of the rear section 352 is located on the left portion 31 of the rear end of the lower case body 3 . thereby , the rear section 352 can be connected with the second zipper strip 41 of the lid plate 4 and the fourth zipper strip 51 of the interior lining 5 can be connected with the front section 351 of the first zipper strip 35 . please refer to fig6 , where a fourth embodiment of the present invention is demonstrated . the first zipper strip 35 encircles the upper peripheries of the inner surface of the lower case body 3 in a clockwise and upward - spiral way . the front free end 353 and the rear free end 354 are respectively sewn to the right portion 32 of the rear end of the lower case body 3 . the front section 351 encircles the upper peripheries of the inner surface of the lower case body 3 . besides , the rear section 352 extends over the front free end , so that the rear section 352 is located above the front section 351 . when the zipper puller 511 of the fourth zipper strip 51 of the interior lining 5 is connected with the front free end 353 of the first zipper strip 35 , the interior lining 5 can be connected into the storage space 33 of the lower case body 3 by zipping the front section 351 of the first zipper strip 35 with the fourth zipper strip 51 in a clockwise direction . when the zipper puller 411 of the second zipper strip 41 of the lid plate 4 is connected with the rear free end 354 of the first zipper strip 35 , the lid plate 4 closely covers the interior lining 5 in a detachable manner by zipping the rear section 352 of the first zipper strip 35 with the second zipper strip 41 in a counterclockwise direction . as shown in fig7 , the rear section 352 of the first zipper strip 35 can be partially separated from the second zipper strip 41 by pulling the zipper puller 411 of the second zipper strip 41 in a clockwise direction . besides , the rear side of the lid plate 4 is connected to the rear periphery of the inner surface of the lower case body 3 . in this case , the lid plate 4 can be opened in order to place objects in between the lid plate 4 and the interior lining 5 or to take the objects out from between the lid plate 4 and the interior lining 5 . in implementation , the front free end 353 and the rear free end 354 of the first zipper strip 35 also can be sewn respectively to the left portion 31 of the rear end of the lower case body 3 . besides , the first zipper strip 35 can be disposed at the upper peripheries of the inner surface of the lower case body 3 in a counterclockwise and upward - spiral manner . by this way , the lid plate 4 can be opened conveniently as well in order to replace the lid plate 4 and the interior lining 5 . 1 . according to the present invention , users can replace the original lid plate with new ones having different functions in accordance with their respective needs . thereby , for users , it is more flexible in use . besides , the space required for store is much diminished . moreover , it is no longer necessary to purchase traveling cases of different styles or specifications , which is money saving . 2 . according to the present invention , it is quite convenient to replace the interior lining in various situations , such as that the interior lining is stained or that users prefer other interior lining with different color . 3 . according to the present invention , the lid plate can entirely cover the interior lining . the objects , no matter small or personal , can be prevented from being fallen out of the case body . thereby , it is effective to protect individual privacy . as disclosed in above descriptions and attached drawings , the present invention can achieve desired objects to provide a traveling case with a functional lid , where users can replace the interior lining and the lid plate according to their respective needs and can flexibly use lid plates with different functions . it is new and can be put into industrial use . although the embodiments of the present invention have been described in detail , many modifications and variations may be made by those skilled in the art from the teachings disclosed hereinabove . therefore , it should be understood that any modification and variation equivalent to the spirit of the present invention be regarded to fall into the scope defined by the appended claims .