The invention relates to the technical field of vacuum packaging, and discloses a multifunctional vacuum packaging machine. The multifunctional vacuum packaging machine comprises a base and a top cover which are connected in a hinged mode, wherein a lower cavity is formed in the top face of the base, an upper cavity is formed in the bottom face of the top cover, a heating system, a vacuum pump set and a control system are arranged on the base, the heating system comprises a heater and a pressing strip, the heater is arranged on the base and located outside the lower cavity, the pressing strip is arranged on the top cover and located outside the upper cavity, the vacuum pump set communicates with the lower cavity through an extraction opening formed in the cavity wall of the lower cavity, and the control system is used for controlling the heater and the vacuum pump set to complete heat sealing and suction operation. According to the multifunctional vacuum packaging machine, the arrangement position of the heating system is optimized, inner pumping and outer pumping of a vacuum packaging bag can be achieved simultaneously, practicability is high, use is convenient, popularization is easy, meanwhile, the volume of a vacuum cavity is reduced, the power requirement of the vacuum pump set is lowered, and control over the manufacturing cost is facilitated.