Fecha de publicación: 30/08/2022 Fuente: WIPO "hemp" The utility model belongs to the technical field of light supplementing devices, and particularly relates to a light supplementing device of an industrial hemp planting bed, which comprises a box body, a light supplementing device and a light supplementing device, the light supplementing assembly is arranged in the box body and used for conducting uniform light supplementing on the interior of the box body. The light supplementing assembly comprises a driving part fixedly connected with the box body; the driving gear is connected with the driving piece; the auxiliary gear is meshed with the driving gear; the driven gear is meshed with the auxiliary gear; a rotating rod is fixedly connected to the side, close to the driving piece, of the driving gear. By arranging the temperature control assembly, the device can ensure that the temperature in the box body is stable, in the embodiment, by combining the light supplementing assembly and the temperature control assembly, the device can perform uniform light supplementing on the planting bed, the light supplementing effect is good, meanwhile, the temperature in the box body can be controlled, the growth efficiency of industrial cannabis sativa is greatly improved, and the industrial cannabis sativa planting device is suitable for popularization and application. The method is suitable for popularization.