Type 1 diabetes with recovered C-peptide suggests a possible diabetic honeymoon phase. Diabetes honeymoon period refers to type 1 diabetes, especially adolescent patients, in the early stages of the disease after adequate treatment with insulin, some patients can reach clinical remission, at this time the pancreatic islet function can be partially or completely restored, only a small amount of insulin or even stopping the use of insulin, can be good control of blood glucose. Diabetes honeymoon period islet function recovery, check C peptide can be restored, but at this time does not mean that the diabetes is cured, but only a temporary remission phase of type 1 diabetes, and ultimately the honeymoon period will be over, and there will be a gradual failure of pancreatic β-cell function. Patients with type 1 diabetes should monitor their blood glucose regularly, follow up regularly, and be treated under the guidance of a doctor.