Diabetic patients with stable blood glucose control and no senna allergy can eat a small amount of senna jelly to avoid blood glucose fluctuation caused by eating too much. Diabetes mellitus is a high blood sugar disease caused by insulin secretion and/or utilization disorder. The raw material of fairy grass jelly is fairy grass, and most of the fairy grass jelly on the market is made of fairy grass powder with added starch, glucose and other ingredients. Diabetic patients with stable blood sugar and no allergy to grass, can eat a small amount of grass jelly, too much may cause a sudden rise in blood sugar. Patients with diabetes should choose snacks reasonably, and it is not recommended to consume too many processed snacks and desserts with high starch content or added sugar. Daily diet should be a combination of coarse and fine food, balanced meat and vegetable to maintain blood glucose and healthy body weight. Detailed daily management is recommended to consult a medical professional.