Broccoli soilless breeding device capable of preventing insect pests

The invention discloses a broccoli soilless breeding device capable of preventing insect pests, which comprises a bottom frame, a liquid storage tank, bottom wheels, a liquid discharge valve and a cultivation mechanism, by optimally arranging the cultivation mechanism, seeds can be moved out of the external environment to be treated, meanwhile, the contact time of the seeds and a pesticide is ensured, redundant pesticide liquid can be discharged after the pesticide liquid is contacted and absorbed, and the breeding efficiency is improved. The survival rate of the broccoli seeds is improved to a certain extent; four groups of supporting rollers and four groups of cylindrical roller frames are arranged on the inner side of the outer frame and play a role in stably supporting the seed arrangement structure; a liquid blocking and discharging assembly is optimally arranged, a servo motor serves as a power source to enable a blocking piece to move transversely, the blocking piece moves on the bottom side of a mesh