This disclosure provides a method for cell management, a terminal, and a network-side device. The method, applied to a terminal, includes: receiving configuration information sent by a network-side device, where the configuration information includes an evaluation period and a trigger condition for triggering the terminal to perform a cell management operation; and if the duration of satisfying the trigger condition is less than the evaluation period, skipping performing the cell management operation; and/or if the duration of satisfying the trigger condition is greater than or equal to the evaluation period, performing the cell management operation.