Disposable blade with angle convenient to adjust

The utility model discloses a disposable blade with an angle convenient to adjust, relates to the related field of disposable blades, and aims to solve the problem that the existing disposable blade is relatively low in working efficiency in the prior art. Mounting teeth are arranged in the connecting sleeve, rotating grooves are formed in the rear ends of the mounting teeth, mounting blocks are arranged at the rear ends of the rotating grooves, mounting grooves are formed in the mounting blocks, a blade body is arranged at the front end of the connecting sleeve, cutting edges are arranged on the blade body, and a fixing ring is arranged on the inner side of the blade body. A fixing sleeve is arranged on the inner side of the fixing ring, a rotating screw rod is arranged on the inner side of the fixing sleeve, a rotating groove is formed in the front end face of the rotating screw rod, a first thread is arranged on the rotating screw rod, a mounting base is arranged at the rear end of a connecting sleeve, and