Embodiments of the present invention provide a method for triggering a cloud service, a cloud server, and a thin client. The method includes: receiving a user's operation of triggering a key, where the key is in a preset binding relationship with a specific cloud service of the cloud server; and generating a triggering message according to the operation of triggering the key, and sending the triggering message to the cloud server, so that the cloud server invokes the specific cloud service according to the preset binding relationship. The embodiments of the present invention provide a user with a shortcut method for invoking a cloud service through a thin client, thereby improving work efficiency of the user.