In clinical practice, the method of nose pinching and puffing can be used to relieve diseases related to secretory otitis media and eustachian tube malfunction. The operation of nose pinching and puffing is relatively simple, you can first take a deep breath, then quickly close your mouth, then pinch your nose and hold your breath at the same time, you can blow into the nasal cavity slightly hard like blowing your nose, then you will feel the swelling of the ears as well as the pharynx, this is because the airflow from the nasopharynx and nasal cavity passes through the eustachian tube and then enters the tympanic chamber. If the patient has good eustachian tube function, the normal result is that a thumping sound of the eardrum is felt. However, if the patient has poor pharyngeal tube function or if the patient has an occlusion problem in the eustachian tube, no such sound will occur. Pinching and puffing the nose can determine whether the eustachian tube is functioning well or not, and can also provide a degree of treatment, but the patient should not use too much force when doing so, as this can easily cause perforation of the eardrum.