The invention discloses a blade switch capable of preventing electric shock in electricity utilization-side maintenance. The blade switch includes a porcelain base, a high-voltage static clamping seat, a wire entering seat, a blade hinging seat, a blade, a porcelain operation handle, a fuse and a wire outgoing seat; the porcelain base is fixedly provided with a low-voltage static clamping seat between the blade hinging seat and the high-voltage static clamping seat; the low-voltage static clamping seat is corresponding to the blade; an angle formed when the blade contacts with the low-voltage static clamping seat is larger than an angle formed when the knife contacts with the high-voltage static clamping seat; and a step-down transformer is connected in series between the low-voltage static clamping seat and the wire entering seat. In maintenance, the blade is lifted; and after the maintenance, the blade is made to contact with the low-voltage static clamping seat, and after a certain moment, the secondary side of the step-down transformer will form perceivable safe voltage, and a maintenance worker perceives the safe voltage and immediately disconnects the contact with an electricity utilization cable, and after a certain time, a switching-on worker continues switching on. With the blade switch adopted, high-voltage electric shock of the maintenance worker at the maintenance side can be prevented, and electric shock accidents can be decreased. The blade switch is safe and reliable in use.