The invention discloses multifunctional safety garment which comprises a safety garment body, an
acrylic fiber thermoregulation spinning layer, an elastic grid layer,
thermoelectric conversion bars, a gas bag and a fast gas filling device. The safety garment body is a coverall with a cap, an
abrasive resistance outer cover with identical elasticity modulus value with balloons is arranged on the outer layer of the safety garment body, the gas bag and the fast gas filling device are arranged on the middle layer of the safety garment body, and the elastic grid layer and the
acrylic fiber thermoregulation spinning layer are arranged on the inner layer of the safety garment body, the connected and sealed
thermoelectric conversion bars are arranged on the outer sewn thread separating parts of the
abrasive resistance outer cover, a power interface with an externally-connected interface connected with the fast gas filling device is arranged on the
thermoelectric conversion bars, the fast gas filling device comprises a
gas cylinder, a sensing device, a control device and a power interface, the sensing device carries out judgment according to measured motion speed value and sets an automatic
gas cylinder opening function, and the
gas cylinder is a flat-shaped compression cylinder located on the
abdomen. By means of the mode, the multifunctional safety garment has the function of ventilation and emergency gas filling to protect the body.