Abstract: In order to make ultra-thin amorphous strip better by oblique spray technology, the two-dimensional K-E model of ANSYS Fluent 14.5 was used to simulate the oblique spray technology. the influence of spray angle, injection pressure, nozzle size, spray distance and temperature on the velocity of steel liquid on pick-up point were simulated, and the simulation results were discussed. The results shown that the optimum technical parameters for the preparation of ultra-thin strip were as follows: the spray angle is 45, the injection distance is less than 0.3 mm, the nozzle gap is between 0.2 mm-0.4 mm, the injection pressure is 0.3-0.5 Mpa, and the steel liquid temperature should be above the melting point of 80-120 ℃.