Silkworm cocoons in water is no hypoglycemic effect, diabetic patients need to go to the hospital for regular treatment. Silkworm cocoon is the cystic protective layer of the pupal stage of the mulberry silkworm, and its protein content is very high, which can enhance the patient’s resistance and immunity. However, silkworm cocoons do not have the effect of lowering blood sugar, therefore, silkworm cocoons in water can not lower the blood sugar of diabetic patients. The most effective treatment for diabetes is to follow the doctor’s instructions to regulate long-term oral hypoglycemic drug therapy, such as metformin, glimepiride, acarbose, etc., or insulin injection therapy. At the same time, patients should choose a low-salt, low-fat, low-sugar diet, together with moderate physical exercise, to maintain a healthy body weight, all help diabetic patients to reduce blood glucose. It is recommended that patients who have been diagnosed with diabetes should go to the hospital in time for treatment and should not blindly believe in folk remedies in order to avoid delaying their condition.