The invention discloses a radar line engraving device and method. The device comprises a base, a connecting base and a main unit base, and the base is arranged at the bottom of the connecting base; the device further comprises a main unit, a fixing plate and a dustproof hood, wherein the main unit is arranged at the top of the main unit base, an operating panel is arranged at the top of the main unit, the fixing plate is arranged at the other side of the main unit, the bottom of the fixing plate is fixedly connected with the top of the main unit base through two fixing rods, and the dustproofhood is arranged at the top of the main unit base. According to the radar line engraving device and method, through the arrangement of an elastic block and the fixing base, after being moved to a target position through universal wheels, the device is conveniently fixed in situ through the fixing base, and cannot slide due to the universal wheels, the practicability of the device is higher, and personnel conveniently use the device; through the arrangement of a water cooling box, low-temperature water is continuously injected into a water cooling pipe conveniently when the main unit works; through heat transfer, the low-temperature water is utilized for transferring out the heat generated when the main unit works, thus the cooling effect of the main unit is better, and the service life ofthe device is prolonged.