The short-circuit current characteristics of Doubly Fed Induction Generator (DFIG) are significantly different from those of conventional motors. According to the voltage drop of the motor, the short-circuit current characteristics of DFIG, taking into account Crowbar protection action and RSC control, are analyzed in this paper. Aiming at the problem that the frequency content of rotor flux linkage and the analytical expressions of stator and rotor current are not completely unified after Crowbar protection action in the existing literature, this paper establishes a DFIG mathematical model and analyzes the transient process of stator and rotor flux linkage of DFIG after Crowbar protection action. On this basis, Lagrangian and anti-Lagrangian methods are adopted. The expression of rotor flux linkage is deduced by transformation method, and the calculation expressions of DFIG stator current and rotor current considering Crowbar protection action are obtained by mathematical analysis method. At the same time, according to the mathematical model of DFIG and the control model of Rotor-Side Converter (RSC), the expressions of stator current and rotor current of DFIG with RSC control are deduced in detail by solving differential equation methods. Finally, the electromagnetic transient simulation model of DFIG is established on Matlab/Simulink platform. The simulation results verify the correctness of the short-circuit current expression of DFIG considering Crowbar protection and RSC control, and then analyze the influence of voltage sag, Crowbar resistance and PI control parameters on short-circuit current. This work is supported by National Natural Science Foundation of China “Multi-perspective Reclosure Sequence Strategy Setting, Risk Assessment and Its Coordinated Optimization Study” (No. 51367009).