Feeder automation (FA) based on recloser could improve the reliability of distribution network effectively. Therefore, it's important to quantatively analyze the impact of reclosing FA on the reliability of distribution system. Firstly, all load zone types are re-divided based on distribution network partition in this paper. Then according to the probability model and the control logic of reclosing FA, the probability and the time for automatic load restoration are derived based on detailed analysis of various outage modes and failure effect of sectionalizer in each stage of power service restoration. Finally, the formulas of reliability indices of distribution network with recloser feeder automation are achieved. The correctness and effectiveness of the proposed model are verified by examples.