Efficient braconid propagation device and propagation method

The invention provides an efficient braconid propagation device and propagation method, and belongs to the technical field of biotechnology. The device comprises hexahedral box body frameworks and protective filter screens wrapping the box body frameworks, the side faces of the two vertical and parallel box body frameworks are each fixedly provided with an installation frame, a host box is arranged between the two installation frames, and the host box comprises two transmission rollers which are rotationally connected between the two installation frames and are parallel to each other; and a net-shaped traction belt is arranged between the two transmission rollers in a traction manner, an activity area is defined by the traction belt and the protective filter screens, an operation area is defined by the traction belt and the two installation frames, and an operation opening communicated with the operation area is formed in each installation frame. A braconid spawning box further comprises a host clamp, host la