Adults snoring and spitting white foam in sleep may be caused by tonsillitis, adenoid hypertrophy, nasal polyps and other diseases, you can choose medication, surgical treatment to improve. 1. Tonsillitis: Tonsillitis may be caused by bacterial infection or the spread of inflammation in neighboring organs, which will lead to the enlargement of tonsils and narrowing of the airway, and the inflammation stimulation will also cause the increase of saliva secretion in the mouth, which will lead to snoring and spitting of white foam, and you need to take amoxicillin capsules, cefixime capsules and other medications, which will make the inflammation subside. 2. Adenoid hypertrophy: adenoid hypertrophy is usually caused by repeated stimulation of inflammation and tissue proliferation, which can block the nostrils and cause nasal congestion, so that adults sleep with their mouths open to breathe, which can also lead to adults snoring and spitting white foam, you need to pay attention to body warmth, and if the adenoid hypertrophy is serious, you can do adenoidectomy treatment. 3. Nasal polyps: If adults suffer from nasal polyps, it will block the nostrils and cause them to breathe with their mouths open when they sleep, but breathing with the mouths open may lead to an increase in the secretion of saliva in the mouth, and the airflow through the mouth will also cause impacts on the edge of the pharyngeal mucosa, which will lead to the phenomenon of adults snoring and spitting out white bubbles in their sleep, and they need to do the endoscopic polypectomy in time to treat the problem. Adults snoring and spitting white foam may also be caused by tongue hypertrophy, soft palate hypertrophy and other diseases, you need to go to the hospital to clarify the cause of the disease and follow the doctor’s instructions for treatment.