Patients with diabetes can eat it appropriately if they are not allergic to reishi ingredients. However, if they are allergic to the ingredients of Ganoderma lucidum, they should avoid eating it. Lingzhi contains amino acids, Ganoderma lucidum polysaccharides and trace elements such as calcium, zinc and chromium, etc. Consumption of Lingzhi by diabetic patients can replenish the human body’s needs, and if diabetic patients do not have any obvious contraindications to the ingredients of Lingzhi, they can eat Lingzhi appropriately in accordance with the doctor’s instructions. However, it should be noted that, due to the variability of personal constitution, some diabetic patients may have an allergic reaction to Ganoderma lucidum, such patients are not recommended to take Ganoderma lucidum, so as to avoid inducing allergic reactions, which may seriously damage the health of the body. Once diagnosed with diabetes, patients need to actively cooperate with doctors to take relevant treatment measures to avoid delaying the condition.