The whiteness of the tongue in early pregnancy may be a physiological phenomenon or a pathological phenomenon. Physiological phenomenon is caused by the differentiation and shedding cells of filiform papillae and bacillary papillae on the back of the tongue, etc. Pathological phenomenon may be caused by Candida albicans infection and chronic gastritis. 1. Physiological phenomenon: It is caused by the differentiation and shedding cells of filiform papillae and fungal papillae on the back of the tongue, as well as the mixture of saliva, bacteria, fungi, food debris and exudate leukocytes. 2. Candida albicans infection: Candida albicans infection is due to fungal infection caused by oral mucosal diseases, mainly manifested as white tongue. Through the regular hospital dermatology fungal scraping examination, if found Candida albicans mycelium or spores can be determined. 3. Chronic gastritis: pregnant women due to hormonal changes in the body, gastrointestinal tract peristalsis function is weakened, their own suffering from chronic gastritis, it is easy to appear indigestion symptoms. Manifested as bitter mouth, white tongue, thick and greasy tongue. White tongue in early pregnancy, should go to the local hospital in time, early detection of the problem as early as possible treatment.