The growth of Beijing Fatty Chicken is very slow. From hatching to the age of three months, other breeds of chickens can grow about three Jin, while Beijing Fatty Chicken can only grow one Jin, which is far slower than other chickens, which will lead to an increase in breeding costs.

Beijing Oil Chicken, a specialty of 9 districts including Fangshan District and Huairou District in Beijing, is a geographical indication of agricultural products in China. Beijing has relatively flat ground, mild climate in front of the mountain, abundant surface water and fertile soil, which provides a feeding environment for Beijing oil chickens.

Beijing Fatty Chicken is a kind of chicken with both meat and eggs. It has the characteristics of "three yellows" of yellow feathers, yellow beak and yellow shin. Its meat quality is excellent, containing intramuscular fat in chest muscles and fatty acids in eggs.