The utility model relates to a check type SF6 (Sulfur Hexafluoride) inflating device with a non-return function. The check type SF6 inflating device comprises a line breaker and an SF6 steel cylinder. The check type SF6 inflating device is characterized by further comprising a connecting hose and an SF6 pressure gauge, wherein the connecting hose is of a segmental structure, one segment of the connecting hose is a first hose which is used for connecting the SF6 steel cylinder with the SF6 pressure gauge, and the other segment of the connecting hose is a second hose which is used for connecting the SF6 pressure gauge with the line breaker. According to the check type SF6 inflating device with the non-return function, the design is reasonable, the structure is simple, the safety and accuracy of SF6 inflating can be improved to the maximum, and the service range is wide, so that the check type SF6 inflating device has good economic benefits.