The utility model discloses a hot melting gutta-percha filling structure, and relates to the field of dental treatment instruments. Comprising a shell and a propelling
assembly, a heating cavity is formed in the shell, the propelling
assembly is arranged in the shell, one end of the propelling
assembly is inserted into the heating cavity, and a stopping assembly is arranged between the propelling assembly and the shell; the propelling assembly comprises a motor, a transmission part and a push rod, the motor is fixed in the shell and drives the push rod to stretch out and draw back through the transmission part, one end of the push rod is connected with the transmission part, the other end of the push rod extends into the heating cavity, and the stopping assembly is arranged on the transmission part and arranged between the shell and the transmission part; the stopping assembly comprises a
magnet and a Hall sensor, the Hall sensor is arranged on the shell, the
magnet is fixed to the pushing sleeve, and the
magnet gets close to or away from the Hall sensor when the pushing sleeve reciprocates. The motor has the
advantage that the motor is not easy to damage.