Patients with type 1 diabetes mellitus (T1DM) receiving insulin therapy commonly suffer from insulin-mediated hypoglycemia and require glucagon for glycemic control to achieve normal plasma glucose (PG) levels. Severe hypoglycemia will endanger the life of patients and require intervention. Stable glucagon analog dasiglucagon was approved for the treatment of patients with severe hypoglycemia and is administered via Zegalogue autoinjector/Zegalogue prefilled syringe.The main purpose of this review article is to review the basic properties and clinical effects of dasiglucagon. We search related literature on CNKI, Web of Science and PubMed by keywords dasiglucagon, hypoglycemia, type 1 diabetes, glucagon. Carry out a careful review of the included literature. Dasiglucagon information on clinicaltrials.gov and https://www.fda.gov/ has been adopted. Dasiglucagon is a novel peptide analog of human glucagon, which can effectively rescue insulin-induced severe hypoglycemia in patients with T1DM and rapidly increase glycemic levels in a small dose under normal and hypoglycemic conditions. It has been proven that dasiglucagon has definite stability and solubility in aqueous formulations. Dasiglucagon has a higher absorption rate and longer plasma elimination half-life than traditional reconstituted glucagon. In three randomized, double-blind, placebo-controlled trials in children aged 6 to 17years and adults with T1DM the median time to glycemic recovery in 10min after dasiglucagon administration was significantly faster than placebo and 99% of patients recovered within 15min after subcutaneous injection of dasiglucagon in the key phase 3 clinical trial. The most common adverse reactions in these phase 3 trials were vomiting, nausea, diarrhea, headache, and injection site pain.