The utility model discloses a radial jet universal joint protector, including center pin (1), top connection (2), connecting pipe (6), lower clutch (7), top connection (2) are overlapped in center pin (1) outside, and through radial shear pin (5) fixed connection, top connection (2) lower extreme is connected with the upper end of connecting pipe (6) between top connection (2) and center pin (1), the lower extreme and the lower clutch (7) of connecting pipe (6) are connected, be provided with on lower clutch (7) be arranged in with outer tube column prevent changeing draw -in groove cooperation card hole (8) with fixed pipe cluster, the upper end of center pin (1) is provided with and is used for and manages screw hole (11) that the polyphone connect, and the lower extreme is equipped with the screw thread that is used for being connected with the universal joint and buckles (12). Because the universal joint is in the in -process that runs the drilling tool into the well is in the connecting pipe and run the drilling tool into the well together with the connecting pipe, solve the universal joint and easily met the technical problem who hinders and wear and tear at the in -process that runs the drilling tool into the well, improved success rate and efficiency that radial jet crept into the technology.