The present invention provides a fan blade adjustment device for wave measurement. With the fan blade adjustment device adopted, the technical problems of complicated structure, high cost and inconvenient operation of an existing adjustment device can be solved. The fan blade adjustment device comprises a fan blade and a base. The fan blade adjustment device is characterized in that the fan blade adjustment device further comprises a telescopic adjustment mechanism, an angle adjustment mechanism and a driving mechanism; the telescopic adjustment mechanism includes slide rails, a slide seat, a screw rod and a screw rod supporting seat, wherein the screw rod is supported on the screw rod supporting seat and is in threaded connection with the slide seat; the angle adjustment mechanism includes a connecting rod supporting seat and a connecting rod, wherein the connecting rod supporting seat is fixed onto the slide seat and is provided with a step hole, the connecting rod passes through the step hole and thereafter is fixedly connected with a connecting block, the connecting rod is provided with a radial flange and is sleeved with a plugging head, wherein the radial flange protrudes out from the connecting rod, and the plugging head is in threaded fit with the step hole and is matched with the step surface of the step hole so as to limit the radial flange; and the driving mechanism includes a servo motor, a motor base, a driving gear, a first driven gear and a second driven gear, wherein the servo motor is fixed to the motor base, the motor base is supported on the slide rails and is in slide fit with the slide rails, and the motor base is fixedly connected with the base through a fixing component.