Abstract: A portable coffee machine includes a housing, a drainage module, an extraction module, and a controller, wherein the drainage module includes a water storing cup, a water pump, a conduit, and a drainage assembly, wherein the water storing cup is connected to the housing and is located at a top of the housing, the extraction module is detachably connected to the drainage module, the extraction module includes a transferring cup and an extraction container, the transferring cup is detachably connected to the extraction container, wherein the controller controls the water pump to pump the water in the water storing cup through the conduit and the drainage assembly into the extraction module for making coffee.