A continuous welded rail welding repair vehicle comprises a main frame (2) and hydraulic supporting legs (22). A cab (3) is arranged on the main frame (2); the two ends of the main frame (2) comprisecouplers (1); the lower portion of the main frame (2) sequentially comprises a walking part (4), an air compressor (12), a water tank (13), a hydraulic pump station (14) and a tool box from front to back. A workshop (25) covering the upper portion of the main frame (2) is arranged on the rear portion of the cab (3), and a new rail (10) is loaded on the main frame (2); a power bag (5), a diesel oiltank (6), an end face treatment machine (8), a rail saw (9), a gas supply chamber I (11), a gas supply chamber II (15), a small machine (16), a welding head precise grinding machine (17), a rail adjusting device (18) and a rail welding machine (21) are sequentially arranged in the workshop (25) from front to back. The continuous welded rail welding repair vehicle can complete work such as sawingof severely damaged rails, treatment of new rail end faces and welding head appearance finishing. The vehicle is also provided with the rail welding machine and the rail adjusting device so that connection of the new rail and existing lines can be completed.