To review the pharmacological researches on TCM(traditional Chinese medicine) herbal formula in treating diabetes.Methods:Collecting and analyzing TCM pharmacological researches of TCM herbal formula in treating diabetes in recent years.Results:The pharmacological mechanism of herbal formula in treating diabetes are as follows:1) Protecting islet β cells and increasing the number of insulin receptors.Then promoting insulin receptor-related protein expression and insulin secretion; 2) Activating glucose enzymes and increasing glucose intake of peripheral tissues and target organs; 3) Purging free radical and antioxidant; 4) treating kidney and retina complications of diabetes.Conclusion:Herbal formula pharmacological researches have achieved great progress in recent years.