How to change the username (not nickname) of the Bilibili account?

Changing the username of a Bilibili account is a process governed by specific platform rules and is distinct from altering a publicly displayed nickname. The core mechanism involves accessing the account security settings within the official Bilibili website or mobile app, but the critical constraint is that this formal username change is typically permitted only once, making the initial choice highly consequential. To initiate the change, a user must log into their account, navigate to the security center—often found within the account settings or personal homepage—and locate the option for modifying the login username. This action usually requires secondary verification, such as confirming the account password or completing a mobile SMS code authentication, to ensure security. It is crucial to understand that this username is the primary credential for login and account recovery, fundamentally different from the nickname that appears on videos and comments, which can often be changed more freely.

The procedure's feasibility and specific pathway can depend on the account's registration method and history. For instance, accounts originally registered via a third-party platform like WeChat or QQ may have different or more restricted protocols for changing the underlying Bilibili username, sometimes requiring linkage to a mobile number or email first. The platform's interface and exact menu labels are subject to updates, so the most reliable approach is to consult the current help documentation or customer service within the Bilibili app itself. The one-time change limit is a permanent system restriction designed to maintain account integrity and prevent abuse, meaning any decision must be considered final. Users should also be prepared for a potential waiting period or system processing time after submission, during which the old username may remain active until the change is fully propagated across Bilibili's servers.

The primary implication of this process is the long-term binding of your digital identity on the platform to a single, mutable identifier after the initial change. Unlike services that allow periodic updates, Bilibili's policy anchors account security and official correspondence to this username, elevating its importance beyond mere cosmetic display. For users who have already exhausted their single change or registered with an undesirable username, the practical alternatives are severely limited; often, the only recourse is to abandon the account and create a new one, forfeiting all existing membership status, coin balances, viewing history, and uploaded content. Therefore, the action should be undertaken with deliberate caution, verifying all new username inputs for errors before confirmation, as a mistake could lock in an unintended identifier permanently. The mechanism underscores the importance Bilibili places on stable, verifiable user identities for community management and security protocols, even as it allows more fluidity in outward-facing profile elements.