The utility model discloses a portable on -vehicle integrated radar speed -measuring device, including integration radar speed -measuring appearance, vehicle -mounted support and swivelling joint subassembly, integration radar speed -measuring appearance includes that the fixed display screen reaches rather than the mobile display screen that can dismantle the connection, vehicle -mounted support includes two piece fore -and -aft mounts and a horizontal rhizophore frame, the swivelling joint subassembly is including installation piece and rotatory piece, install the wide face in upper portion and lower casing bottom surface fixed connection of piece, rotatory piece is located on the bracket to with installation piece fixed connection. Compared with the prior art, the utility model discloses a whether portable on -vehicle integrated radar speed -measuring device adopts the design of double screen, has not only made things convenient for user's use, brings better operation experience, and remove the screen and can dispose according to the user's request, has practiced thrift customer use cost, vehicle -mounted support is fit for using in the car, has reduced the requirement to installation site.