The invention proposes a keyboard, video and mouse right control method and apparatus. The method comprises the steps of storing a corresponding relationship between a user identifier and a KVM right by a BMC, wherein the KVM right is a KVM watch right or a KVM operation right, and the KVM operation right includes a watch right and an operation right; and receiving a connection establishment request sent by a first KVM client used by a first user through the BMC, judging whether the first user has the KVM watch right or not, if yes, judging whether a primary user who already obtains the KVM operation right exists or not, if the primary user exists, sending KVM watch right acquisition requests to KVM clients used by all primary users, and if the KVM clients used by all the primary users indicate agreement, establishing a connection between the BMC and the first KVM client, and confirming that the first user obtains the KVM watch right to become a secondary user. According to the right control method and apparatus, the KVM operation is ensured to be orderly performed.