The invention provides a live-streaming-based display method and game interaction system, and a server. The live-streaming-based display method includes the steps: a client sends player information toa server after game team grouping is successful; the server obtains portrait data according to the player information, and determines whether the player information satisfies preset conditions; whenthe player information satisfies the preset conditions, the server obtains first game data, preset identification data, and live-streaming data, fuses the first game data, the preset identification data, the portrait data, and the live-streaming data to obtain first fused data, and sends the first fused data to the client; and the client obtains a live-streaming interface integrated into a game screen according to the first fused data, and the live-streaming interface includes a portrait pattern with an identifier. The live-streaming-based display method has the advantages of inserting an identifier pattern on the portrait of the player, enriching the live-streaming interface, and improving the live-streaming effect.