The invention discloses an identification method for the cause of ice blast location deviation in ice blast filter rods. The method comprises the steps of adjusting the directions of ice blast filterrods by using a left-handed spiral rule; detecting the ice blast filter rods of which lapping openings are consistent in direction by using quality detection equipment for the ice blast filter rods; calculating ice blast displacement deltaL:deltaL=L-L0 of each ice blast filter rod according to an ice blast position design value L0 and an ice blast location detection value L; and carrying out offset statistics and analysis and judging the cause of ice blast location deviation according to the deviation percentage. According to the identification method, the process planners and the site operation personnel are assisted in analyzing the online quality of the ice blast filter rods and adjusting the equipment and a production technology in real time through improvement of an ice blast filter rod sample placement method and an ice blast filter rod detection algorithm and statistics and analysis of the positive and negative offsets of the ice blast displacement and the variation trend of theice blast displacement, thereby improving the quality of the ice blast filter rods, reducing the reject ratio and improving the effective operation rate of the equipment.