The reasons for more and more spots are mainly bad habits, ultraviolet radiation, ageing, endocrine disorders and so on. 1. Bad life habits: If you have irregular work and rest for a long time and often stay up late, it will make your skin metabolic rate and metabolism deteriorate, thus affecting the metabolism of melanin, and ultimately pigmentation, which will lead to more and more spots. 2. Ultraviolet radiation: long-term exposure to the sun, ultraviolet radiation on the long-term damage to the skin, can accelerate the synthesis of melanin, pigmentation will lead to more and more spots. 3. Ageing: With ageing, body organs will gradually age, and so will the skin, resulting in more and more spots. 4. Endocrine disorders: after the change of sex hormone level in the body, if there is endocrine disorders, it will easily lead to melanin production, thus the phenomenon of more and more spots appears. As there are various causes of spots, it is recommended to seek medical advice to find out the specific causes and treat them according to the doctor’s advice so as to avoid delaying the condition.