a light source system and a display apparatus comprising the light source system are provided . the display apparatus comprises the light source system and an imaging system . the light source system is configured to provide a light for imaging . the light source system comprises a mirror wheel and at least two light source modules , configured to provide at least two light beams respectively . these light beams are lit up according to a predetermined sequence . after being reflected by or directly passing through the mirror wheel , the light beams form a continuous light , traveling into the imaging system for imaging on a screen .