This study aims to examine the influence of LMX and Psychological Capital on Organizational Citizenship Behavior (OCB). This research was conducted in MSMEs in Semarang City. The population of this study consists of all MSMEs scattered in Semarang City, with an unidentified population size. The sampling method used was non-probability sampling with convenience sampling technique, and obtained the number of respondents as many as 143 people. The research instrument used was a questionnaire that was tested for validity and reliability, then to explain the magnitude of the influence of the independent variable on the dependent variable using multiple linear regression equations using the SPSS 26 program. while testing the hypothesis using the F test, t test and beta coefficient. The results showed that (1) Leaders Member Exchange (LMX) had a significant and positive influence on Organization Citizenship Behavior (OCB). (2) Psychology Capital had a significant and positiv influence on Organization Citizenship Behavior (OCB).