Patients with bleeding gums should consult the periodontology department of a specialized hospital or the stomatology department of a general hospital, and the examination items include physical examination and laboratory tests. 1. Physical examination: including visual examination, probing, percussion, palpation, etc., so that the doctor needs to observe the changes in the shape, color and texture of the gums, to clarify the location, scope and reaction of the lesion, to observe whether there is any overflow of pus, pressure or fluctuation, and to check the looseness of the teeth. 2. Laboratory tests: including routine blood tests, liver and kidney function tests, coagulation function tests, bone marrow tests and cytochemical staining. It helps to further clarify the cause of the disease and provides reference for subsequent treatment. Gum bleeding can be caused by chronic inflammation and inflammatory hyperplasia of the gums, changes in hormone levels, blood diseases, tumors and other factors, patients should do the next examination under the guidance of the doctor in order to clarify the cause of the disease and active treatment.