In this survey，the number of slaughtered pigs recorded in 10 pig slaughtering houses in Beijing city from 2013 to 2016 was statistically analyzed. The results showed that the number of pigs slaughtered at slaughtering house in Beijing city were respectively 7.428 3 million，7.885 3 million，6.798 9 million and 5.744 9 million with a falling tendency from 2013 to 2016 annually；Among them，pigs from other cities accounts for 84.74%、74.08%、72.69%，and 73.92%，the pigs of Beijing city accounts for 15.36%，25.92%，27.31% and 25.92%. In addition，the quantity of pigs slaughtered presents obvious seasonal changes. The detection rate of diseased pig was 1.56‰，1.29 ‰，0.80‰ and 0.46‰ from 2013 to 2016 at slaughtering houses. There were significant differences in the detection rate of the diseased pigs from different provinces and cities，and had close relationship with the season，and might have relationship with distance to Beijing city.