The invention discloses a dosing device for awake tracheal intubation. The dosing device comprises an automatic dosing device, a fiberoptic bronchoscope and an oral cavity supporting device, wherein the automatic dosing device comprises a medicine inlet, a medicine outlet and an automatic dosing mechanism, the medicine inlet is connected with a flexible medicine bag, the medicine outlet is connected with a dosing tube, the interiors of the medicine inlet and the medicine outlet communicate with each other through the automatic dosing mechanism, the fiberoptic bronchoscope comprises a display screen, an optical fiber cable and a lens which are connected in sequence, the dosing tube and the optical fiber cable are connected with an insertion tube through a fixed tongue piece, the insertion tube communicates with the dosing tube, a dosing spray head is arranged at the front end of the insertion tube, the optical fiber cable is arranged in the insertion tube and penetrates out of the front end of the insertion tube in a sealed mode, and the lens is arranged at the front end of the dosing spray head. According to the above scheme, automatic intermittent dosing can be achieved through the automatic dosing device, accurate dosing in the trachea of a patient is achieved through the fiberoptic bronchoscope, the dosing spray head can be automatically closed, a liquid medicine can be prevented from spilling and leaking, and in addition, the comfort of the patient can be improved through an oral cavity supporting device.