Result: The rate of skin prick test and skin patch test positive for cow's milk protein was highest (73.3% and 89.5%), followed by shrimp (15.1% and 15.8%), crabs (11.6%), beef (10.5%), egg white (8.1%), the rate of skin prick test positive in the ≥ 6 months group was 25.5%, higher than the < 6 months group was 5.1% (p<0.05). Eosin accounted > 4% for 32.4%, red blood cell in stool accounted for 42.9%, total IgE is higher than 230IU / ml, accounting for 19.0%.