The invention relates to a method for checking the strength of an absorber valve block under any non-uniform pressure and belongs to the technical field of absorbers. The method is characterized in that the annular absorber valve block is divided into a plurality of micro ring units in a non-uniform pressure mechanical model, the maximum stress coefficient of the absorber valve block under any non-uniform pressure is acquired through maximum stress coefficient superposition calculation under micro ring pressure, and therefore stress strength calculation and checking of the absorber valve block under any non-uniform pressure can be achieved. Living example calculation and ANSYS emulation proof indicate that the maximum stress calculation and strength checking method, for the design and strength checking of an absorber and an overlapped valve block, of the absorber valve block under any non-uniform pressure is accurate and reliable. Meanwhile, by means of the method, the design level, quality and performance of an absorber can be improved, design and test costs can be reduced, and the requirement for the design life of the absorber can be met on the premise that characteristic design requirements are met.