The invention discloses a shield type fire extinguisher which comprises a fire extinguisher body and a shield. The fire extinguisher body is arranged at the back surface of the shield, and is connected with the shield through a connecting piece; the shield comprises an upper shield part, a middle shield part and a lower shield part; an open hole is formed in the position, corresponding to a spray head of the fire extinguisher body, of the middle shield part; the end part of the spray head is clamped in the open hole; a first guide rail and a second guide rail are arranged on the outer side of the middle shield part; the upper shield part is sleeved with the first guide rail and moves upwards along the first guide rail; and the lower shield part is sleeved with the second guide rail and moves downwards along the second guide rail. The shield is arranged on the shield type fire extinguisher, and during extinguishment, the upper shield part and the lower shield part are pulled open, so that the protective area is increased, and personal injuries are avoided during the extinguishment; and in a non-use state, the upper shield part and the lower shield part are folded in the first guide rail and the second guide rail of the middle shield part correspondingly, thus the storage is facilitated.