The invention relates to a prompting method, device and system. The prompting method comprises the steps of: sending a notification message to a home gateway connected with notification sending equipment when the notification message is received; and receiving feedback from the home gateway and performing a corresponding prompting action. Through the technical scheme, when receiving the notification message, the notification sending equipment can send the notification message to the home gateway, and the home gateway forwards the notification message to notification receiving equipment in a using state or in an immersive experience state, so that the notification message can be promoted by the notification receiving equipment. Thus, a condition that when a user is in the immersive experience, the important prompt message can be also received on an immersive experience product is ensured, so that the user is prevented from missing the important prompt message, and the user experience is improved.