The utility model discloses a long spiral drill rod of effective conversion and utilization spoir, the outer wall of drilling rod main part on be provided with helical blade (3), helical blade (3) arespiraled from drilling rod main part bottom and are risen to drilling rod main part top, the drilling rod main part on still be provided with and keep off native board (7), keep off native board (7)and divide the drilling rod main part into function pole (1) and basic pole (2), function pole (1) is gone up the one end of being close to the native board of fender (7) and is provided with soil inlet port (6), the inside top -down of function pole (1) is provided with stirring chamber (4) and injection chamber (5) of intercommunication, the utility model discloses to an ordinary pore -forming stage processing difficult problem that the spoir faced of digging soon to the mode of spraying compaction improves soil body property, arouses side resistance, with means conversion spoir, " the changing waste into valuables " who markets one's own products. Realize reducing the spoir when pile foundation load -carrying properties promotes and pile up, reduce cost of transportation, ecological protection environment.