The invention discloses a multifunctional vacuum PTC heating mute cell wall breaking machine. The cell wall breaking machine comprises a machine base, a processing cup and a control circuit board; a cup cover is arranged at the top of the processing cup, a PTC heater and blades are arranged at the bottom in the processing cup, a vacuum pump is arranged in the machine base, an extraction valve and a one-way steam valve are arranged on the cup cover, and the vacuum pump is connected to the extraction valve through a pipeline; the cell wall breaking machine further comprises a temperature sensor and a pressure sensor. Before a food material is stirred and smashed, the processing cup is vacuumized so that the food material can be stirred and smashed in a vacuum environment and prevented from acting with air in the stirring and smashing process, or vacuumizing is carried out after the food material is processed and cooled to keep the food material fresh. Before vacuumizing operation, the temperature of the material in the cup is detected through the temperature sensor, and it is avoided that vacuumizing is carried out in high temperature environment; air pressure is detected through the pressure sensor, and the vacuumizing degree is controlled to be matched with a preset value.