The present invention provides a method and a system for controlling the call of an input method process, and a terminal. The method for controlling the call of the input method process comprises the following steps: obtaining an input instruction in a specified type of application for a user to call the input method process; generating an authentication prompt interface according to the input instruction, to prompt the user to input biometric feature information through the authentication prompt interface; judging whether the biometric feature information is matched with preset biometric feature information or not; and when judging that the biometric feature information is not matched with the preset biometric feature information, controlling the input method process to stop working. According to the technical solution of the present invention, after opening the specified application and before calling an input method for editing, the user needs to authenticate the biometric feature information, thereby effectively ensuring that the application is not edited illegally, preventing the leakage of personal information, and protecting the data security of the user.