Systemic lupus erythematosus is an autoimmune disease that affects multiple systems and organs. It cannot be cured and can only be managed through medications to control the progression of the disease and delay complications. It commonly occurs in women of childbearing age. In the early stages, when no other organs are damaged, there are no special dietary restrictions and black fungus can be eaten. However, fruits such as figs and bayberries, which are exposed to ultraviolet light for a long period, should be avoided. If the disease affects the kidneys causing damage such as proteinuria and increased creatinine, a diet low in salt, fat, and restricted in high-quality protein is necessary. High-quality protein mainly refers to lean meats and pure milk, and consumption of black fungus should be moderated.