The invention discloses a pump system and an ink path system of a small character inkjet printer. The pump system comprises two pump frames assembled in a vertically symmetric mode, wherein the horizontal planes of the pump frames are square, four pump bodies are installed in the horizontal direction of the hollow position between the two pump frames and symmetrical in pairs and face the east, the west, the south and the north, and each pump body is provided with a push-pull buffering assembly, a diaphragm and a valve; a transmission system is installed below one pump frame, an ink stirring system is installed on the other pump frame, a bearing cover and a stirring disc are installed at the upmost end of a transmission shaft, powerful magnets are installed on the stirring disc, an ink mixing bottle is installed above the stirring disc, a stirrer is installed in the bottle, and the stirrer and the powerful magnets of the stirring disc attract each other; four square pipeline plates are installed on the four vertical faces on the peripheries of the pump frames, and the ink path system is arranged in the pipeline plates. The pump system and the ink path system are small in size and occupied space, the inner structure is concise, consumable usage amount and mechanical abrasion are reduced, the working performance is improved, production and maintenance cost is reduced, and production and maintenance efficiency is improved.