The increasing number of moles on the body may be related to heredity, ultraviolet radiation and hormone level disorders, etc. It is recommended that patients clarify the cause of the increasing number of moles under the guidance of a doctor to improve the symptoms. 1. Heredity: If the patient’s parents have increasing number of moles, the patient may also have increasing number of moles due to heredity. 2. Ultraviolet irradiation: If the patient is exposed to ultraviolet rays for a long time, it can stimulate the proliferation of melanocytes in the body, thus leading to more and more moles. 3. Hormone level disorders: for women who are pregnant or breastfeeding, under the influence of hormone level, more and more moles may appear at this stage. With the end of pregnancy or breastfeeding, the hormone level will return to normal and the moles will gradually fade away. For patients with increasing number of moles, it is recommended to go to regular hospitals for timely examination and standardized treatment under the guidance of professional doctors.