Abstract: Based on three-dimension soften models, considering the heterogeneities on mesoscopic scale, a set of numerical tests were undertaken using a Parallel-RFPA (Realistic Failure Process Analysis) program. The paper investigates the influence of reinforcement characteristic on failure mode and stress distribution of the reinforced concrete specimens under uniaxial tensle stress. It can be found, averagely, the fracture space decreases and the fracture number increases with the increasing of the Elastic modulus of reinforcement. Equal-space fracture was observed in the test, and its mechanism was studied through a set of numerical tests.