Social support is one of the vital elements for achieving life satisfaction during imprisonment. This study aims to determine the importance of social support since the Malaysian prison population conquered by drug-abuse prisoners affected the prison climate and life satisfaction. The sample was randomly collected from the sampling frame, consisting of drugabuse prisoners in Malaysian drug cases prison using a self-administered questionnaire. Data were analysed using the IBM-SPSS-AMOS version 25, the second-generation multivariate analysis method of the Structural Equation Modeling (SEM). The findings have been reaffirmed by bootstrapping methods. The research echoes that the relationship between the prison climate and life satisfaction is entirely mediated by social support. A study also indicates that social support is essential to transform prison climate and life satisfaction among drug-abuse prisoners. Practical contributions to the Malaysian Prison Department are proposed to design appropriate policies and strategies to improve prison climate and social support to fulfil drug-abuse prisoners' life satisfaction since Malaysian life satisfaction has become the government's priorities the 12 th Malaysia Plan (2021-2025).