The invention relates to a high-precision test ship model processing method, belonging to the technical field of ship model processing. The invention is an improvement on the traditional ship model manufacturing method, and combines the advantages of 3D printing technology and the traditional plate frame processing technology. Mainly includes the deck, keel, rib, flat-sided flat-bottomed panel system and bow section, stern section, middle section of 3D printed segments, as well as the hull of the middle part of the outer surface of FRP. The ship model processing method can ensure that the produced ship model has very high precision, and can meet the requirements of the strength and watertightness of the ship model. Moreover, the method is simple and fast, greatly simplifies the processingdifficulty in production, shortens the production cycle, and has high practical value.