Collaboration is an important part of social and emotional skills. Under the research framework of OECD, it includes three skills: empathy, trust and co-operation. Based on the data of 10-year-old and 15-year-old students’ participation in OECD Social and Emotional Skills Study in Suzhou, this paper presents the emotional regulation performance of Suzhou students by using descriptive statistics, difference test and regression analysis. The study finds that there are considerable gaps on collaboration scores with respect to age, gender, and location. There are 14 significantly positive predictors of students’ collaboration scores (home possessions, books at home, safety, friendship, well-behaved friends, daily activities indoor, daily activities outdoor, relationship with teachers, sense of belonging to school, climate co-operation, extracurricular activities, understanding mother, understanding father, and perfectionism parents), and two significantly negative predictors (daily activities online, problems with parents). Students’ collaboration scores are significantly positive predictors of four life outcome variables, including overall health, closeness to family, closeness to others, subjective wellbeing. Therefore, the cultivation of students’ collaboration should be given more scientific and accurate policy support.