The utility model discloses a gastroscope mouth pad, aiming at solving the technical problems that the existing gastroscope mouth pad cannot adapt to each patient and the tongues of partial patients cannot be completely pressed. The gastroscope mouth pad comprises a protective plate, a seaming pipe and a tongue depressor, a communicating hole is formed in the middle of the protective plate, one end of the seaming pipe is connected to the edge of the communicating hole, and the section of the seaming pipe can be changed; one end of the tongue depressor is connected to the free end of the seaming pipe in the length direction of the seaming pipe, and the length of the tongue depressor can be changed. The gastroscope mouth pad can adapt to each patient, so that each patient does not feel uncomfortable when using the gastroscope mouth pad, and the tongue of the patient can be pressed.