An interactive form in vibrato short video App. According to the query of Tik Tok official website, Tik Tok's birthday party gift live broadcast refers to an interactive form in the vibrato short video App. In the live broadcast of Tik Tok, the anchor can set the scene of the birthday party and invite fans into the room to participate in the interaction. Fans can broadcast blessings and gifts by buying gifts, such as cakes, balloons and bouquets. And interact with the anchor in the chat room. After receiving the gift, the anchor can interact with thanks and perform or share his birthday story in the live broadcast. This form of interaction can not only increase the interaction between the anchor and the fans, but also bring certain economic benefits to the anchor.