The invention discloses a stirring device with the protective function for a construction site. The stirring device comprises a rectangular frame body, supporting legs are arranged at the four cornersof the lower part of the rectangular frame body, the rectangular frame body is supported through the supporting legs, a cement stirring structure is arranged on the rectangular frame body, and the cement is stirred through the cement stirring structure; and a material dropping and collecting mechanism is arranged on the rectangular frame body, the material dropping and collecting mechanism collects the dropped material to prevent the waste of the material, meanwhile, the material is prevented from being scattered on other devices to protect other devices from being damaged, a motor protectionmechanism is arranged on the rectangular frame body, a motor is protected from being eroded by the rain and dust through the motor protection mechanism, and a controller is arranged on the rectangular frame body. The stirring device has the beneficial effects the structure is simple, and the practicability is high.