Oral hypoglycemic drugs are an important method for diabetic patients to control blood sugar. Insulin sensitizers can improve insulin resistance and enhance insulin sensitivity, which can effectively help diabetic patients control blood sugar and are commonly used oral hypoglycemic drugs in clinical practice. commonly used insulin sensitizers mainly include: 1. thiazolidinediones, which enhance insulin sensitivity by activating peroxisome proliferators, such as pioglitazone. Thiazolidinediones can cause water and sodium retention, leading to edema or aggravating heart failure. And thiazolidinediones can only be used for type 2 diabetic patients whose pancreatic beta cells are still functional, not for type 1 diabetic patients.2. Biguanide preparations can enhance insulin sensitivity and effectively improve insulin resistance, which helps diabetic patients to control blood sugar well and also helps obese diabetic patients to control their weight.