The invention discloses a dry-mixed pretreatment 
cement mortar stirring device, and belongs to the technical field of constructional 
engineering. The dry-mixed pretreatment 
cement mortar stirring device comprises a base, the base further comprises a base frame, the base frame is located at the top end of the base and fixed to the side wall of the top end of the base, a stirring 
barrel is fixed to the inner side wall of the base frame, the side wall of the top end of the stirring 
barrel is rotationally connected with a rotating rod, and the outer side wall of the rotating rod is fixedly sleeved with stirring blades. Mud sand is screened and fed through a screening and discharging 
assembly, stones and cakes contained in the mud sand can be separated out, meanwhile, discharging can be conducted more quickly, blocking is not likely to happen, the quality of the dry-mixed mud sand is improved, the 
workload of stirring blades is reduced, the service life of the stirring device is prolonged, quantitative discharging is conducted on a discharging 
pipe through a quantitative discharging 
assembly, slow overflowing cannot be caused when a material collecting box conducts material collecting again, mud sand pouring waste is avoided, meanwhile, workers can conveniently conduct material collecting control according to construction requirements, the cost is saved, and the 
processing efficiency is improved.