A method for controlling an infrared fill light and related products are provided, and the method includes the follows. A reference biometric recognition pattern that is used by a mobile terminal to process a target event is obtained. A target fill-light strategy corresponding to the reference biometric recognition pattern is determined according to a pre-stored mapping relationship between biometric recognition patterns and fill-light strategies of the infrared fill light. The infrared fill light is controlled to fill light according to the target fill-light strategy when the reference biometric recognition pattern is enabled.