The invention discloses a method for drilling a titanium alloy material. According to the method, a polished standard auger bit is used for drilling the titanium alloy material; the standard auger bit is polished into a group drilling manner, the number of groups is three, and therefore the axial force during drilling is reduced; meanwhile, chip grooves are increased so as to reduce the cutting temperature; during drilling, the rotating speed n of the bit is controlled at about 300 r/min, and the feed amount f is controlled at about 0.10 nn/r, so that the durability of the bit is improved; and N32 engine oil and kerosene prepared according to the proportion of 3:1 are selected to serve as cooling lubricating fluid or vulcanization cutting fluid is adopted so as to ensure the drilling quality of the titanium alloy material. According to the method, the problems that during titanium alloy drilling, the durability of a bit is low, and the surface roughness cannot meet the requirement can be solved; and the method is economical, and the production efficiency is improved as well. Using is convenient, and the precision and roughness of machined holes are high; and the production and quality control cost is reduced, and a great significance is achieved for titanium alloy hole machining.