The invention relates to the field of hermetia illucensa breeding, and discloses a three-dimensional circulating breeding bed for hermetia illucensa. The three-dimensional circulating breeding bed comprises a machine head, a main frame and a machine tail. The machine head is internally provided with three sets of motors, and the size of the machine head is 1.6 meter length * 3 meter width * 3 meter height. The machine tail is internally provided with two sets of motors, and the side of the machine tail is 1.6 meter length * 2 meter width * 3 meter height, The size of a part which connects themachine head and the machine tail is 0.8 meters. The motors are rotary motors. The main frame is of five layers. The top ends of two sides of the main frame are fixedly, vertically and upwardly provided with four sets of brackets. The brackets are provided with pulley blocks. Two ends of the main frame are provided with aerating devices. Two sides of the main frame are provided with dropping boards. Two sides of the five layers of the main frame are all provided with aerating devices and dropping boards. According to the invention, the dropping boards can prevent trouble and unnecessary loss caused by the fact that larvae of the hermetia illucensa crawl out from the machine head or tail when faeces are handled.