A directed selection of black soldier fly(Hermetia illucens) using chicken manure over five consecutive generations(F1 to F5) was conducted. The developmental duration of each generation was recorded, and the body weight of larvae at each developmental stage was measured. Individuals with rapid growth and larger body size were selected for reproduction. The results indicated that after directed selection using chicken manure, the larval period of the black soldier fly was significantly shortened by 3.2 days, the body weight of final-instar larvae increased significantly by 15 mg, and the pupation rate rose by 11.5 percentage points. Moreover, the selected black soldier fly exhibited enhanced efficiency in chicken manure processing by 3.5 percentage points, and the moisture content of chicken manure was reduced by 7.6 percentage points. Nutritional composition analysis revealed that the crude protein content decreased slightly by 1.74 percentage points, while the crude fat content increased by 2.43 percentage points, and the dry matter content significantly increased by 5.25 mg.