Structural equation analysis with AMOS software utilized to examine the relationships between two-dimension ethical climate and task-focused interpersonal helping behavior. The result shows that a) other-focused moral reasoning ethical climate (OEC) is an important predictor of employees' task-focused interpersonal helping behavior, and b) self-focused moral reasoning ethical climate (SEC) alone is not related with task-focused helping behavior, however, c) when accompany with OEC, SEC become significantly and positively related with taskfocused helping behavior. This finding indicates that OEC plays a very curial role, it works like a kind of catalyzer or guarantee, which not only positive effect the helping behavior by itself, but also can turn SEC positive effect helping behavior.