Provided is a food preparing machine, comprising a main material container, an accessory container, a stirring shaft, and a sealing piston. The bottom of the accessory container is connected with thetop of the main material container. The top end of the accessory container is provided with a top cover which can open and close. The top cover is connected with the accessory container in a sealed manner. The top cover is provided with a top cover hole. The top end of the stirring shaft passes through the top cover hole. The hole is connected with the stirring shaft in a sealed manner. The bottomend of the main material container is detachably connected with a bottom cover. The bottom cover is connected with the main material container in a sealed manner. The bottom end of the stirring shaftis provided with a stirring head. The food preparing machine saves energy and reduces consumption, savers labor and time, and is clean and environmental-friendly. The food preparing machine is simplein operation, fast and convenient in cleaning, and convenient in storage and carrying. The machine has a lead screw which is free to spin forward, rotate backward, and push and pull. The machine is characterized by optional combination, dismounting, and cleaning. The machine is most suitable for preparing gelled food which has complex process and strict ingredients. The machine completes cookingprocessing of the food, and can smash fruits and vegetables, seasoning, and meat, and can be used for other purposes.