Reflux of food into the nasal cavity is mainly caused by the dysphagia that can occur in advanced stages of soft palate cancer, where destruction or perforation of the soft palate can lead to food reflux into the nasal cavity. The surgical complications are open nasal sounds and food reflux into the nasal cavity. When this condition occurs, it is recommended that people go to the hospital to have it removed to prevent the cells from spreading. The early discomfort of soft palate cancer may go unnoticed, but it can be serious in advanced stages, so it is important to detect and treat it early. So, how to diagnose food reflux to the nasal cavity? If it is some early discomfort in the lower throat, the symptoms are almost unnoticeable. Usually it is ignored. Later a series of symptoms will appear, such as bad breath, sore throat, fever, and radioactivity to the ipsilateral face and neck position. We need to keep this knowledge in mind! If it is in advanced stage, the symptoms of difficulty in swallowing will appear. And changes in voice, fixation of the soft palate, destruction, and perforation can occur, all of which can lead to reflux of food into the nasal cavity. Upward or outward invasion of the nasopharynx or the gap next to the pharynx can be caused by the symptoms of teeth clenching and difficulty in opening the mouth. This disease should be distinguished from mixed flow, which is a relatively common benign tumor. There are no conscious symptoms, its growth is slow, and most of the masses have a normal mucosa. There is no bone destruction and the disease can be diagnosed by aspiration cytology. Food reflux into the nasal cavity is mainly caused by dysphagia in advanced stage of soft palate cancer, which can be caused by destruction or perforation of the soft palate. The surgical complications are open nasal voice and food reflux into the nasal cavity.