With reviewing and summarizing the evolution of the reinforcement methods for massive concrete structures in Design Specification for Hydraulic Concrete Structures(SDJ 20-78), the regulations of the minimum reinforcement ratio of massive concrete in currently domestic and oversea codes of various industries are compared and analyzed, and the principles of relevant provisions are investigated. A new method to determine the minimum reinforcement ratio is presented and the recommendations on relevant provisions are made. The advantages of DL/T 5057-2009 and Building Code Requirements for Structural Concrete(ACI 318-14)are combined skillfully in the suggested method, which guarantes that the amount of reinforcement is fixed when ρ<ρ_min, ensures that the less reinforcement failure will not occur when γ_dM is less than and close to the cracking moment M_cr. In addition, the limit that the minimum reinforcement ratio for massive concrete structures in DL/T 5057-2009 is only applicable to the bottom plate mounted on foundation and mainly subjected to vertical load with more than 2. 5m thickness is eliminated.