In order to improve the rationality, versatility and accuracy of drilling for solid wood cabinet furniture in variable-length custom production, this paper uses causal analysis, practical research, and literature research methods to analyze and summarize the drilling requirements in the custom production of four solid wood cabinet furniture:the variable size requirements of parts in terms of length, width and height, determination of product variable size range requirements, determination of structural drilling information requirements, automated processing and manual processing drilling matching requirements. Then the four rules for arranging holes were proposed:the rules for arranging holes from the edge, the rules for arranging holes from the middle, the rules for even-numbered holes, and the rules for reversely determining holes. Taking a typical TV cabinet as an example, the paper demonstrates the design practice and summarizes the advantages and disadvantages in practical application. The four hole row rules have certain rationality, versatility and accuracy. It has certain reference significance for the design and production of customized solid wood cabinet furniture.