Taking the controllable phase shifter widely used in the power system as the research background, aiming at the influence of the controllable phase shifter on the asymmetric short-circuit current, a practical calculation method for asymmetric short-circuit current based on controllable phase shifter is proposed. First, the positive sequence, negative sequence and zero sequence models are established based on the structure and principle of the controllable phase shifter. Second, based on the symmetrical component method, the network equations of each sequence component with controllable phase shifter system are established, and then the controllable phase shift is proposed. The practical calculation method of various types of asymmetric short-circuit currents of the system is analyzed. Furthermore, the factors affecting the short-circuit current are analyzed. Finally, based on the 3-machine 9-node system, the above-mentioned practical calculation method is used to calculate the asymmetric short-circuit current. The simulation results show that the method is effective. Through comparative analysis, it can be seen that the phase shift angle and the short-circuit point position of the phase shifter are factors affecting the short-circuit current, and the influence situation needs to be calculated through specific calculation. This work is supported by National Natural Science Foundation of China (No. 51307123) and Science and Technology Project of State Grid Corporation East China Branch (No. SGHD0000DKJS1800150).