The invention belongs to the technical field of mobile games, and discloses an anti-theft method and system for a mobile phone game account, and a server, wherein the method comprises the steps: S1, obtaining a verification address when the account logs in a game, and comparing whether the verification address is the same as a login address when a previous game is carried out or not; if the verification address is the same as the login address, executing the step S2; if the verification address is different from the login address, executing the step S3; S2, obtaining a verification identifierwhen the account logs in the game, and comparing whether the verification identifier is the same as the verification identifier set in the previous game; if the verification identifier is the same asthe verification identifier set in the previous game, executing the step S4; if the verification identifier is different from the verification identifier set in the previous game, executing the step S3; S3, sending a verification message to the mobile phone number bound with the account, and judging whether the verification message is correct or not; if the verification message is correct, executing the step S4; if the verification message is wrong, executing the step S5; S4, logging in the game, and storing a login address; and S5, if the login is abnormal, locking the current account, and marking the current account as a stolen state and a to-be-unlocked state. In conclusion, multiple anti-theft protection can be effectively carried out on the game account.