The invention discloses a high-temperature motor armature insulating treatment process which comprises the following technical steps: high-temperature electromagnetic wire winding, insulating paint dipping, slot insulation and welding-spot high-temperature insulating, wherein the high-temperature electromagnetic wire winding comprises splicing in a form of partitioning type stamped pieces, welding with laser welding at spliced parts and performing wiring and paint dipping on the end parts of a winding of a welded armature; the insulating paint dipping realizes high-temperature insulating paint dipping in a manner of combining vacuum paint dipping and pressure paint dipping; the slot insulation is realized by coating the inside of an iron-core slot with high-temperature insulating paint and curing the insulating paint; and the welding-spot high-temperature insulating comprises extracting a wire core through an installation wire capable of resisting 400 DEG C for a welding spot between every two adjacent phases of windings of a motor and covering the welding spot with an insulating layer. By the execution of wire winding for a high-temperature motor, dipping of high-temperature paint and welding spot insulating, trial manufacturing of a high-temperature power generator is realized, a machining process of a high-temperature motor insulating material capable of resisting 400 DEG C can be obtained, so that production of the high-temperature motor is realized.