The utility model provides a cement mortar filtering, stirring and scattering device. The device comprises a stirring device and a material feeding device, wherein the stirring device consists of a stirring cavity and a scattering cavity which are communicated with each other; a spiral stirring shaft is arranged in the stirring cavity; a first feeding hole and a second feeding hole are formed in the upper part of the stirring cavity; a horizontal stirring shaft is arranged in the scattering cavity; a discharging hole is formed in the lower part of the scattering cavity; the material feeding device comprises a material feeding box, a second material feeding cavity and a water supply device; the interior of the material feeding box is divided into a feeding cavity formed in the upper part of the material feeding box and a blanking cavity formed in the lower part of the material feeding box through a partition plate with through holes; a discharging hole of the blanking cavity is communicated with the first feeding hole through a filter plate; a first feeding cavity is formed in the feeding hole of the material feeding cavity; a water outlet of the water supply device leads to the feeding hole of the first feeding cavity. The cement mortar filtering, stirring and scattering device has a simple structure and is convenient to feed; raw materials are filtered in a feeding process, impurities of the raw materials are removed, the quality of cement mortar is guaranteed, and the construction effect is improved.