The breeding habits of White-checked Laughing Thrush (Garrulax sannio) was studied during February to June of 2009 in the suburbs of Nanchong,Sichuan. The results showed that the nesting success rate of White-checked Laughing Thrush was 73. 3% ; the main factors which affected the nest-site selection from more important to less important were the location and stability of nests,concealment of nest,and food resource; Normal recess time was decreased as increased of hatching day in incubation; and the normal recess times increase as hatching days increasing. The frequency of feeding was increased with age of fledgling increasing in nestling period,and the feeding frequency varied within a day,the highest feeding frequency occurred in 7:01-10:00 and 17:01-19:00,the lowest did in 6:30-7:00 and 10:01-14:00. The morphology of fledgling changed greatly during incubation and the body mess,body length and some other morphological characters of it can well be described by the Logistic equation,the growing curves of weight and different organs are shaped as "S"for nestling less than 10.5-days old; The breeding success rate of White-checked Laughing Thrush was 23. 1% .