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In order to protect the safety of personal, avoid many dangerous factors in the hall of HL-2A tokamak during discharge, such as high voltage, cryogenic temperature, magnetic filed and radiation, and ensure that no one is allowed to stay in the hall during plasma discharge. With reference to the safety protection design of ITER CODAC(Control, Data Access and Communication), combined with the engineering needs of the HL-2A, a dedicated safety interlocking network was built and a set of personal safety interlock protection system based on EPICS(Experimental Physics and Industrial Control System) was designed. The system uses the EPICS CA(Channel Access) protocol and Siemens S7nodave driver to realize the soft IOC(Input Output Controller) reading PLC(Program Logical Control) variables, and combines SQL database and C# programming to realize the control of the access control system of the tokamak machine hall, ensuring the safety of the hall equipment and experiment personnel. After operation for more than three years, the system has improved the safety protection level and plasma discharge efficiency of HL-2A.