The invention discloses a method and a device for improving the performance of relational programming. The method comprises the following steps that S1, a process daemon is started, and normal operation of a process manager is protected; S2, the process manager initializes a stack and creates a process pool, the process pool comprises a plurality of sub-processes, and the process pool dynamicallyadjusts the number and health degree of the sub-processes according to the state of the message stack and the state of the system load; S3, the process pool dynamically runs codes according to logic programmed by the relation, the sub-process obtains a trigger message at the heap top each time, the logic of the sub-process is processed, and the sub-process is continuously and circularly processed;S4, when the subprocess processes the trigger message, a newly generated message is written into the heap bottom, and the subprocess is waited to process. Under a modern computer system, a pluralityof threads are simulated by using a program, relational programming is subjected to mode simulation by using a stack and width-first algorithm, and relational programming codes are simulated and operated by using an existing hardware system.