The invention discloses a multifunctional geological compass for solid mineral exploration. The multifunctional geological compass comprises a main body structure, an auxiliary structure and a measuring assembly, the main body structure is detachably arranged in the auxiliary structure, and the measuring assembly is detachably arranged on the main body structure; the invention relates to the technical field of mineral exploration, through the main body structure, the compass main body can be used for exploration, cutting of the cutter body and the like, the cutter body can be perpendicular to enable the first lens to be opposite to the second lens, the compass can be used as a telescope, and the compass can be used for light condensation for ignition; and the main body structure can be loaded through the auxiliary structure, meanwhile, the multifunctional compass can be used for solar power generation, positioning and calculation, the overall size is small, carrying is convenient, angle measurement can be conducted by means of the measuring structure, multifunctional use is achieved on the whole, use of the compass main body is not hindered, and the multifunctional effect of outdoor exploration is achieved.