An article published in the "Journal of East China Normal University" ("Education Sciences") was based on the data of 10-year-old and 15-year-old students in Suzhou City, China participating in the OECD social and emotional ability assessment. The study used descriptive statistics, difference testing, regression analysis, and other statistical methods to conduct a comprehensive analysis of the emotional regulation performance of Suzhou students. Sampling of the OECD Youth Social and Emotional Ability Research is systematically conducted from all eligible schools and students in the participating cities, specifically to all primary and secondary schools in the 6 districts and 4 county-level cities under the jurisdiction of Suzhou City. The study uses a stratified two-stage cluster sampling method. The 10-year-old group and the 15-year-old group constituted 3,800 and 3,750 subjects, respectively, with the total sample size being 7,550. The research results are divided into three parts, including overall condition, analysis on predictive variables of emotion regulation, and variables of emotion regulation and life outcome. The analysis shows differences in the students' abilities to resist stress, their optimism, and emotional control according to age, gender, urban and rural areas, and school categories. There is a correlation among the 15 abilities of the "Big Five Personalities" model, which one can analyze from multiple levels through regression analysis. The following details are are presented in this article: (1) The overall situation of emotional regulation; (2) Analysis of predictors of emotion regulation; and (3) Emotion regulation and life outcomes. [For part I, seeEJ1324078; for part III, see EJ1324104; and for part IV, see EJ1324107.]