The utility model discloses a better forerunner automotive transmission of rigidity, , which includes. High -speed synchronisation assembly, three fourth gear synchronisation assembly, the input shaft, the jackshaft, six grades of gears of input shaft, five grades of gears of input shaft, the input shaft fourth gear, the input shaft three -speed gear, input shaft second -gear gear and input shaft first gear, six grades of gears of jackshaft, the countershaft fifth speed gear, the jackshaft fourth gear, the jackshaft three -speed gear, jackshaft second -gear gear, low -speed synchronisation assembly, one grade of bearing and jackshaft constant mesh gear, and assemble the jackshaft first gear on one grade of bearing, the differential mechanism casing, differential mechanism primary speed reducing gear wheel, differential mechanism planetary gear: but assemble on the jackshaft, high -speed synchronisation assembly is located between six grades of gears of jackshaft and the countershaft fifth speed gear high -speed synchronisation assembly and the equal horizontal slip of three fourth gear synchronisation assembly, and three fourth gear synchronisation assembly are located between jackshaft three -speed gear and the jackshaft fourth gear.