Snowflake shaped steel sheet pile is a new type of special-shaped pile with large specific surface areas and high bearing capacities while saving materials. In this paper, the optical frequency domain reflectance (OFDR) technology is used to carry out the uplift model test of snowflake steel sheet piles, and the strain at different positions of the pile body and the horizontal displacement of soil at di-fferent distances during the uplift process of the steel sheet piles are obtained. The test results show that OFDR can accurately monitor the deformation characteristics of the snowflake steel sheet pile during the process of uplift, and reveal the deformation laws of different parts of the pile body. The strain magnitude and fluctuation of the snowflake steel sheet pile are different at different positions of the pile body during the process of uplift, the strain of junction of the web is the smallest and the strain of the flange edge is the largest. The results show that the horizontal displacement of the soil around the snowflake steel sheet pile increases with the increase of the load during the uplift process, the horizontal displacement of the soil at 200 mm from the model pile is about 19.15% of the soil at 100 mm.