Black crusts on the palate are commonly associated with pulmonary trichinosis. Pulmonary trichomycosis is an infectious disease of the lungs caused by pathogenic bacteria of the order Trichophyton. Although rare, it develops rapidly and has a high mortality rate. Clinically, Trichoderma and Rhizopus are more common, the former mainly invades the lungs, the latter mostly involves the sinuses, eyes, brain and gastrointestinal tract, and can be hematogenously disseminated to the whole body. Pulmonary trichinosis can be a primary infection, but also secondary to sinus lesions or trichinosis sepsis. The disease begins as a symptom of acute bronchitis and causes pulmonary solids and lung abscesses with signs of thrombosis and infarction when the lungs are involved. So what are the preventive measures for black crust on the palate? The following is a brief introduction. Preventive measures for black scabs on the palate 1, first control the primary disease, especially diabetes, leukemia, etc. 2, accurate grasp of the rational application of immunosuppressive drugs. 3, the disease has an acute onset, short course and mortality rate of more than 50%. Early diagnosis and timely treatment is the key to improve the survival rate, control the primary disease, timely administration of antifungal drugs is very important. 4, preferred amphotericin B, once a day or every other day intravenous, the total amount of 3g, can also be used flucytosine, miconazole, etc. 5.Limited chronic pulmonary lesions, or “Trichophyton spheres” can be lobectomized. Pre-operative and post-operative amphotericin B treatment is given.