This study aims to develop and validate a checklist for IGD symptoms of Chinese adolescents based on the ffth edition of the diagnostic and statistical manual of mental disorders (DISCA). We recruited 2144 secondary school students who reported that they had played Internet games in the past 12 months in two large cities of China. The 9 item of DISCA were all signifcantly and positively correlated and the scale reliability was satisfactory. The unidimensional structure of the scale was confrmed by Confrmatory Factor Analysis (CFA), χ2/df = 246.18/27, CFI = .95, RMSEA = .06. Measurement
invariance across gender and city groups was confrmed by Multiple-group CFA. Criterion validity was demonstrated by the signifcant positive associations between DISCA score and self-identifed IGD, loss of control regarding time spent on Internet gaming, time spent on playing Internet games, depression, and suicidal ideation. DISCA is a brief, reliable, and validated assessment to measure adolescent IGD.