The design function of MCR is to guarantee the safety of NPP operation,reduce the operation pressure of operators.The diversity of DCS platform,digital HMI,back-up panels and the different control place for MCR/SCR should be carefully considered in the design of MCR.Due to the different standards and regulations are adopted by the Suppliers,the layout designs of control rooms are quite different.The Suppliers’ national standards and regulations also should be considered in the design and procurement of MCR,epecially the requirements in Chinese standards and regulations should be considered.