Being setup on head on vertical wall at corner of Z shaped conveyer way, conveyer way reflecting baffle plate is composed of base plate and toothed corrugated plate. The toothed corrugated plate is perpendicular to radiation direction of proton. Crest line of corrugation is parallel to floor of conveyer way. Protective coating of copper powder or lead powder for absorbing bombardment with protonsis spray coated on external surface of the toothed corrugated plate. The toothed corrugated plate and base plate are prepared from cement board or wood plate. Embedded connection or bonding connection is adopted for reflecting baffle plates and walls in conveyer way. Comparing with prior art, the invention possesses features of simple structure, easy of construction, and good effect of radiation protection.