The invention relates to the field of constructional engineering, in particular to a sand screening device for constructional engineering. The sand screening device for constructional engineering comprises a left frame, a right frame, a power assembly and a support part. When the sand screening device needs to be moved, the sand screening device can be driven by a motor to move, and the sand screening device is fixed and driven by the motor to screen sand when sand needs to be screened. The left frame comprises a left side board, a power source, a narrow base, slide rails, fixed-connection rods, a left flat board, wheel frames, a single wheel shaft and a single wheel; the left side board is fixedly connected with the left end of the left flat board; the power source is fixedly connected with the upper end of the left side board; the front end and the rear end of the right end of the left flat board are fixedly connected with the fixed-connection rods through screws; the right ends of the two fixed-connection rods are fixedly connected with the front end and the rear end of the narrow base through screws; the right end of the narrow base is fixedly connected with the two parallel slide rails; the lower end of the left flat board is fixedly connected with the two wheel frames; the single wheel is fixedly connected with the middle end of the single wheel shaft and located betweenthe two wheel frames; and the single wheel shaft is rotationally connected with the two wheel frames through rotation of bearings.