Ancillary service market is an important element in electricity market, which plays a significant part in optimal alloca tion of resources in microgrid.Firstly, different types of ancillary ser vices and market members in microgrid are analyzed.Then, a clear ing model for reserve ancillary service market in microgrid is de signed based on the“Name Your Own Price”bidding mechanism to satisfy customer’s demand for reserve service.Considering the ca pability of different suppliers providing reserve service, including controllable distributed generation, energy storage devices and con trollable loads, the clearing model is optimized with the objective of minimizing total cost of the buying reserve service.Case study veri fies the feasibility of proposed market clearing method.