The invention discloses a method for supporting guiding and positioning installation of a platform drilling module. The method comprises the following steps of (1) manufacturing a primary guiding and positioning assembly and a secondary guiding and positioning assembly; (2) installing long guiding and positioning assemblies and the secondary guiding and positioning assembly; (3) lifting and slowly lowering the to-be-installed framework module, utilizing the primary guiding and positioning assembly as the framework module to guide, and quickly guiding the framework module to the part above the lower structure; (4) continuing to lower the to-be-installed framework module, and utilizing the secondary guiding and positioning assembly to further accurately position the guided framework module above the lower structure onto the lower structure, until the framework module is stably lowered onto the upper surface of the lower structure; (5) firmly connecting the accurately positioned framework module and the lower structure, and removing all detachable long inserting rods, short inserting rods and pin shafts in the primary guiding and positioning assembly, so as to complete the guiding and positioning connection of one framework module and the lower structure. The method has the advantages that the guiding and positioning are convenient and rapid, and the implementing is convenient.