The present invention discloses a double-fed wind generation system low-voltage ride-through control method. A reactive current meeting a power grid guide rule requirement is injected into a PCC in afault period, a rotor reactive current command as shown in the description is calculated to ensure that the total reactive current IGq injected into the PCC and the total active current IGd meets a condition as shown in the description; an active current command as shown in the description and a reactive current command as shown in the description of a converter at a network side are calculated; on the premise of ensuring the output of reactive current meeting the power grid guide rule requirement, a rotor active current command as shown in the description is calculated; and the control current commands as shown in the description are transmitted to a rotor current loop controller, and the control current commands are transmitted to a current loop controller at the network side. The unstability problem of a double-fed wind generation system in the faults of the power grid special in a weak grid is effectively solved, and the stable operation capacity of the double-fed wind generation system and the voltage quality of the connected power grid are improved.