Abstract: In order to explore the difference of meat performance and slaughter performance between Tanniu chicken and Wenchang chicken, five thousand hens of Tanniu chicken and five thousand hens of Wenchang chicken at the age of one day were selected in the experiment. Tanniu chickens were identified by fast and slow feathering, and Wenchang chickens were identified by anal turning to identity male and female. Each chicken group was set with five repetitions, 1 000 for each repetition. Under the same feeding and management conditions, they were fed the same diet and caged until they were listed at the age of 16 weeks. At the end of each week, 40 chickens were randomly selected from each repetition of two chicken flocks, weighed after 12 hours of fasting, recorded the weekly feed consumption of each repetition, and calculated the cumulative feed conversion ratio. The number of dead and eliminated chickens of two chicken flocks per day was recorded, and the survival rates of brooding period（0-6 weeks old） and growing period（7-16 weeks old） were calculated. At the end of six weeks, the number of cocks of each repetition in two chicken groups was counted, and the accuracy of male and female identification was calculated. At the end of 16 weeks of age, ten chickens were randomly selected for body size（body oblique length, keel length, chest depth, chest width, tibial length, tibial circumference and hip width） measurement and slaughter performance（live weight, slaughter rate, half eviscerating rate, eviscerating rate, leg muscle rate, chest muscle rate and abdominal fat rate）. The results showed that there was no significant difference in birth weight between the two groups（P＞0.05）, and there was no significant difference in body weight between 1-2 weeks old chickens（P＞0.05）. The body weight of hens of Tanniu chicken at 3-16 weeks old was always significantly higher than that of hens of Wenchang chicken（P＜0.05）. There was no significant difference in cumulative feed conversion ratio between the two groups at 0-4 weeks old（P＞0.05）. The cumulative feed conversion ratio of Tanniu chicken at 5-16 weeks old was significantly lower than that of Wenchang chicken（P＜0.05）. There was no significant difference in the survival rate between the two groups during both brooding and growing periods（P＞0.05）. The male and female identification accuracy of Tanniu chicken was 99.60%, which was significantly higher than that of Wenchang chicken（P＜0.05）. The body oblique length, keel length, chest depth, chest width, tibial length, tibial circumference and hip bone width of Tanniu chicken were higher than those of Wenchang chickens, but there were no significant differences（P＞0.05）. The half eviscerated rate, eviscerated rate, leg muscle rate and chest muscle rate of Tanniu chicken were significantly higher than those of Wenchang chicken（P＜0.05）. There was no significant difference in slaughter rate and abdominal fat rate between the two groups（P＞0.05）. The results indicated that there was little difference in body shape between Tanniu chicken and Wenchang chicken, but its meat and slaughter performance were better than that of Wenchang chicken, and the accuracy of male and female identification of fast and slow feathering was also significantly higher than that of traditional anal turning identification.