The utility model discloses a winch for shear wave measurement. The device comprises a rack, a bearing mechanism and a lifting mechanism arranged at the top end of the rack, the rack comprises a bottom plate and a fixing plate. A square through hole is formed in the middle of the bottom plate; side plates are correspondingly arranged at the two ends of the bottom plate. The side plates are perpendicular to the bottom plate; a circular wire outlet hole is formed in the middle of the fixed plate; the upper end of the side plate is rotationally connected with a lifting mechanism; the lifting mechanism comprises a rotating shaft, a shaft sleeve, a motor and a traction rope, the rotating shaft is connected with the shaft sleeve in a sleeved mode, one end of the rotating shaft penetrates throughthe side plate and then is in transmission connection with an output shaft of the motor through a belt, the rope head of the traction rope is fixedly connected with the shaft sleeve, the rope tail isconnected with a bearing mechanism, and the bearing mechanism comprises a shell and a distance measuring unit. According to the utility model, the measurement operation is more stable, the fixed-point lifting of the measurement instrument is realized, the steps of the shear wave velocity measurement operation are simplified, and the precision of soil layer quality detection is improved.