The invention relates to the technical field of reactor filter assembly, in particular to a reactor filter assembly screen production method. The method includes the steps of firstly, forming a reactor filter assembly screen: heating a stainless steel wire filter screen to 1050-1100 DEG C in a vacuum furnace, keeping the temperature for 5-20 minutes, cooling the stainless steel wire filter screen to room temperature in inert gas, punching the stainless steel wire filter screen into a semispherical screen, and subjecting the semispherical screen to secondary punching; secondly, brazing the reactor filter assembly screen: cleaning and drying the reactor filter assembly screen, well mixing brazing filter metal and binder according to a mass proportion of 6-8:1, evenly coating the mixture on the reactor filter assembly screen, drying, heating the reactor filter assembly screen to 840-860 DEG C, keeping the temperature for 45 minutes, heating to a brazing temperature of 980-1000 DEG C, keeping the temperature for 5-15 minutes, cooling along with a furnace to below 700 DEG C, and fast cooling to room temperature in argon. By the method, batch production of the reactor filter assembly screen can be achieved, and the reactor filter assembly screen is long in service life and low in production cost.