The causes of freckles on little girl’s face include heredity, sun exposure, irregular life and so on. 1. Heredity: freckles have a clear heredity, if the immediate family members have freckles, the chance of children having freckles on their faces is higher, which is also known as hereditary freckles, and it is more common among women, and it will start to manifest itself slowly at the age of 3 to 5. 2. Sun exposure: After the ultraviolet rays in the sunlight irradiate the skin, melanin particles will be produced in the epidermis of the skin, which is the reason for the formation of most of the color spots, and it is more likely to form freckles after sun exposure if there is a hereditary risk of freckles in oneself. 3. Irregular life: Staying up late, eating spicy and stimulating food, emotional fluctuation, mental stress, etc. will slow down the metabolism, which will easily lead to the occurrence of freckles. Once freckles are formed, they will not fade away by themselves, mainly affecting the appearance. If you really mind it, you can remove it by laser treatment in the dermatology department of regular hospitals after adulthood.