The aim of this research is that investigate the influence of communication to job performance. This research is based on the question which conduce a questionnaire survey of 250 workers in sports centers in Seoul. But, it except 39 in sincere papers. this research use the way of Cronbach and it indicate the degree of trust - in communication 0.8538, in job performance .08288 We use the program named SPSS WIN 11.0 on analysis of data and we use various ways t-test, One-way ANOVA, Scheffe`s verification after the fact, Analysis of recurrence, and so on then we can get these three results below. first, the communication of sports centers workers on personal speciality is different on every facts(sex, age, education, position, length of service) second, the job performance of sports centers workers on personal speciality is different on every facts,(sex, age, education, position, length of service) third, in the communication types of workers sports center, upper, down, and horizontal, communication have influence on job performance passively.