Abstract: A frameless motor based on porous hydrogel and a heat dissipation method thereof are provided. Front and rear sealing shells are respectively mounted at front and rear ends of a motor stator. A motor rotor is provided inside the motor stator. The front sealing shell is fitted and embedded into one end of the motor stator to form a plurality of slots distributed axially, each of the slots is provided with the hot-end hydrogel. The rear sealing shell is embedded into the other end of the motor stator. The annular cold-end hydrogel is provided inside the rear sealing shell and adjacent to the rear end of the motor stator, and is in contact with the hot-end hydrogel. The inner and outer sides of the cold-end hydrogel are respectively provided with inner and outer graphene conductive tapes. Both hot-end and cold-end hydrogels are provided with cavities filled with the coolant.