Shell assembly, machine head and food processor

The utility model discloses a shell assembly, a machine head and a food processor of the machine head. The shell assembly is used for a machine head of the food processor. The shell assembly comprisesa bottom shell with a first opening, an electric control box with a second opening, a surface cover and a sealing piece. The electric control box is installed in the bottom shell, the second openingfaces the first opening, the surface cover is installed on the first opening and seals the bottom shell, the end face, facing the electric control box, of the surface cover abuts against the second opening and seals the electric control box, and the sealing piece is arranged at the joint of the surface cover and the second opening. When the shell assembly is used for the machine head of the food processor, condensed water appears in the machine head due to the temperature difference between the inside and the outside, and the condensed water cannot enter the electric control box due to evaporation because the electric