OBJECTIVES: To develop a recommendation for gestational weight gain for the Chinese pregnant women; METHODS: We conducted a retrospective longitudinal study involving repeated measures of weight data at a referral medical center in China. Singleton deliveries without predefined adverse outcomes were eligible for inclusion. We used two-level linear spline model to predict weight gain by gestational age (week) according to pre-pregnancy BMI categories (Chinese population standard). We reported the recommended gestational weight gain and the rates of weight gain during pregnancy, and plotted the recommended gestational weight gain charts by week of gestation, stratified by pre-pregnancy BMI. The MLwiN 2.30 and SAS 9.4 were used for analysis; RESULTS: We collected data from 10,031 pregnant women with singleton and term pregnancy. After removing individuals with pre-defined adverse outcomes, 4,566 pregnant women with 50,589 repeated measurements of weight were finally included. For underweight (pre-pregnancy BMI<18.5 kg/m2), normal (18.5-23.9 kg/m2), overweight (24.0-27.9 kg/m2), and obese (≥28.0 kg/m2) pregnant women, the recommended gestational weight gains are 12.7-17.4 kg, 12.4-17.2 kg, 10.9-16.1 kg, and 9.3-14.6 kg; and the corresponding rates of weight gain are 2.40, 2.35, 2.14, and 1.95 kg/month between 14 and 36 weeks of gestation. The recommended weight gain is similar at 10th to 14th gestational week (about 0.5 kg/month) and in the last month (about 1-2 kg); CONCLUSIONS: The recommendation for the gestational weight gain is specifically applicable for the Chinese pregnant women, with important implications for the pregnancy weight management.