The invention relates to a Dewar jar ten-way pressure testing device which comprises a pressure testing platform and a pressure testing blocking wall. A support is fixed below the face of the pressure testing platform. A lower clamping hoop is fixed longitudinally on the face of the platform. A plurality of upper clamping hoops are fixed at the upper end of the lower clamping hoop through bolts. Arc grooves are formed in the contacting faces of the upper clamping hoops and the lower clamping hoop, so that a pressure testing ten-way part is clamped. The pressure testing blocking wall is arranged on the periphery of the pressure testing platform, pressure testing gas is prevented from hurting people or equipment, safety of pressure testing is improved, working is reliable, people cannot be hurt during pressure testing, and efficiency is high.