The present invention provides a quick high-pressure no transmission stoppage urgent repair method and a jig. According to the method, a leak stopping object assembly is fixed on a pipe leakage part through a transition fixing jig; then the annular oil-resistant rubber sealing is squeezed through dry type sealing bolts and an annular copper sheet on the leak stopping object base so that the leak stopping object base closes the leakage position and the leaked fluid flows out through an overflow orifice on the leak stopping object; then the leak stopping object base is welded with the pipe; thenwelding the anti-leakage pipe cap for sealing the dry type sealing bolts, and sealing the overflow orifice with a stopper and an overflow orifice pipe cap; and finally detaching the transition fixingjig for completion. The urgent repair method and the jig of the invention have the advantages of convenient using, no restriction by the pipe structure, pressure, temperature and medium in the pipe and the leakage position, and capacity for satisfying the urgent repair of the leakage point in the range of 360 DEG of the pipe. The urgent repair jig can safely and quickly control the situation to aminimal range, block the leakage point with a maximum and simultaneously guarantee the operation safety of the personnel once an accident occurs.