Glycaemic control in type 1 diabetes (T1DM) can be challenging, and is influenced by many factors. This study aimed to investigate glycaemic control and its associated factors in Chinese people with T1DM.This cross-sectional study included 779 participants with T1DM selected from hospital records review, outpatient clinics and inpatient wards. Data were collected via face to face interviews, medical records and venous blood samples. Multiple logistic regression analysis was done to determine factors associated with glycaemic control.Among 779 participants, 49.2% were males. The median age was 24 years (interquartile range [IQR] 14-36). The median age at diagnosis of diabetes was 17 years (IQR 10-28) and the median duration of diabetes was 4 years (IQR 1-8). The mean ± standard deviation hemoglobin A1c (HbA1c) was 9.1±2.5%. Nearly 80% of participants had inadequate glycaemic control (HbA1c ≥ 7.0%). Multivariable analysis showed that age at diagnosis of diabetes ≤ 20 years, living in a rural location, low household income, low intake of fruit and vegetable, low level of physical activity, low adherence to insulin and low utilization of insulin pump were independent risk factors for poor glycaemic control (HbA1c ≥ 9.0%).Inadequate glycaemic control is common among people with T1DM in China. Efforts should be made to control the modifiable risk factors which include low intake of fruit and vegetable, low level of physical activity and low adherence to insulin for the improvement of glycaemic control. Appropriate use of insulin pump among T1DM should be encouraged. (This abstract has been accepted by AASD this year and published by the conference.).