Sebaceous cysts primarily arise from the vigorous secretion of one's own sebaceous glands, forming benign proliferation in the subcutaneous area, which contains a cyst filled with tofu-dregs-like substances. Initially, they appear as abscesses with clear pus inside, and over time, the pus gradually dries out to form the cyst. This condition is related to inflammation within the body. Once identified, it is advised to seek formal treatment in the dermatology department of a regular hospital. The most common treatment plan is a minor surgery to completely remove the cyst and the tofu-dregs-like substances, which can effectively eradicate the issue. This disease has a certain recurrence rate, so it is crucial to regulate one's diet and lifestyle habits, avoid spicy and stimulating foods, and try not to stay up late.