Brushing your teeth and gums always bleed is usually caused by inflammation of the gums, but it can also be caused by blood diseases and other systemic diseases. The details are as follows. Healthy gums will not bleed when brushing teeth with a little force, when inflammation of the gums occurs, gingival grooves can bleed when gingival grooves are lightly probed, bleeding after probing is an important indicator for diagnosing the presence of inflammation of the gums, bleeding occurs when brushing teeth or biting hard food, and sometimes spontaneous bleeding can be seen. When inflammation occurs in the gums, the capillaries in the connective tissue of the gingiva expand and become engorged, the epithelium in the sulcus may become thin due to ulceration, and part of the epithelium loses its continuity, and at this time, stimulation such as brushing will cause the rupture of the capillaries, which will lead to bleeding. Blood disease patients with coagulation dysfunction, there will also be gum swelling and bleeding, and bleeding always occurs when brushing teeth. There may be other reasons why the gums always bleed when brushing teeth, and it is recommended to visit the hospital in time to receive professional treatment.