Moles on the face are getting bigger and bigger, which may be caused by ageing, external stimuli, hormonal changes, and changes in nature. 1. Moles on the face may increase in size with age and body growth. 2. It may be caused by external physical and chemical factors such as ultraviolet radiation. After exposure to ultraviolet rays, the skin color of the body is darker and the pigmented mole will become darker and larger accordingly. 3. It may be related to the change of hormone level. Such as puberty, pregnancy or oral glucocorticoid, contraceptive pills, etc., hormone level changes may lead to a tendency to increase the size of the nevus. 4. If the mole on the face increases rapidly within a short period of time, the border of the mole is not clear, the edge is irregular, the color is not uniform, and the mole is bulging, etc., accompanied by pain, ulceration, bleeding and other abnormal changes, it is possible that the mole has malignant changes. When the mole on your face is getting bigger and bigger, you should go to the dermatology department in time and get reasonable treatment under the doctor’s guidance.