To support research and interventions using a positive, strength-based framework of lesbian, gay, and bisexual (LGB) identities in China, this study translates the Lesbian, Gay, and Bisexual Positive Identity Measure (LGB-PIM) into Standard Chinese and evaluating its reliability and validity among Chinese sexual minorities. Following Brislin's standardized translation procedures (translation, back-translation, cultural adaptation, and pretesting), the scale retained 25 items across 5 dimensions. A convenience sample of 392 participants underwent assessments of internal consistency (α = 0.92), retest reliability (α = 0.80), structural validity (68.54% variance explained), and construct validity. The five-dimensional structure showed robust convergent validity (AVE >
0.50, CR >
0.70), and construct validity was supported through convergent positive associations with positive well-being indicators and discriminant nonsignificant links to distress indicators. The scale demonstrated strong reliability, and all model fit measures met acceptable standards. The study concludes that the C-LGB-PIM is a reliable tool for assessing LGB positive identity in China, aiding researchers in creating culturally sensitive interventions and laying the groundwork for future research to enhance the psychological well-being of LGB individuals in China and globally.