The invention belongs to the technical field of medical instruments, and particularly relates to a special inspectoscope for the otolaryngology department. The inspectoscope comprises expansion forceps and two connecting brackets; the two connecting brackets are fixedly connected with the expansion forceps, the handheld end of the expansion forceps is fixedly connected with a non-self-locking switch and an arc-shaped pressing plate, the non-self-locking switch and the arc-shaped pressing plate are symmetrically distributed, and the inner side of the connecting support is slidably connected with a positioning pin. The tongue depressor is inserted into the oral cavity of a patient and presses down the tongue, and then the distance between the two contact plates is increased by pressing the handheld end of the expansion forceps until the silica gel protective layer makes up-down contact with the oral cavity of the patient and supports the oral cavity of the patient, so the oral cavity of the patient cannot move, and the observation effect of the interior of the oral cavity of the patient is guaranteed; and the silica gel protective layer plays a role in buffering soft tissues of the oral cavity of the patient, so the comfort level is improved.