Based on the traditional technology and heat curing treatment, the reactive powder concrete (RPC), which has compressive strength of 200 MPa, was prepared with the raw materials of ordinary Portland cement, ultra pulverized fly ash, silica fume, superplasticizer and standard sand. When this RPC200 contains 3% steel fiber by volume, its compressive strength is about 250 MPa, and its flexural strength reaches 45 MPa. The effects of content of ultra pulverized fly ash, water binder ratio, sand binder ratio, and content of steel fiber on compressive strength and flexural strength of RPC were discussed in detail.