Many well-known Internet companies have announced patents related to human-computer dialogue. Among them, the patent for "human-computer dialogue method, device, equipment and computer-readable storage medium" applied by Tencent Technology (Shenzhen) Co., Ltd. can achieve smooth communication between humans and machines; the patent for "human-computer dialogue and pre-trained language model training method, system and electronic equipment" applied by Alibaba Damo Academy (Hangzhou) Technology Co., Ltd. can improve the accuracy of question-and-answer interaction; the patent for "human-computer dialogue method and dialogue system" applied by Huawei Technologies Co., Ltd. can identify abnormal user behavior and respond.