The invention discloses a portable type SF6 gas cylinder heating system. A control module, a display module, an alarm generating module, a Flash information storage and a temperature sensor are arranged in a housing, wherein a state indicator lamp is arranged on the housing; an interface module is arranged on the control module; the heating module adopts an industrial hot-air blower; the control module is connected with the industrial hot-air blower through a serial interface; when the temperature is detected to be a normal temperature, a power supply of the industrial hot-air blower is opened by the control module to control the hot air blower to work, and the state indicator lamp gives green light; when the temperature is detected to exceed a line-crossing value, the alarm generating module alarms, the state indicator lamp gives red light, the red light is displayed on the display module, and the power supply of the industrial hot-air blower is switched off by the control module. According to the portable type SF6 gas cylinder heating system, constant control on temperature is realized by virtue of the control module, the industrial hot-air blower and the like, so that the gas charging efficiency is improved, the gas residual rate is reduced, and potential safety hazards can be avoided.