Online marketing method, device and system for bank financial products

The invention discloses an online marketing method, device and system for bank financial products, which can be applied to but not limited to the 5G technical field, and the system comprises a client terminal, a sales terminal, a message server, an audio and video server, a marketing management server and a customer contact server. The client terminal is used for a target client to purchase financial products of a bank outlet; the point-of-sale terminal is used for acquiring a user portrait of a target customer, and pushing one or more financial products to the customer terminal according to the user portrait of the target customer; the message server is used for transmitting a dialogue message between the sales terminal and the client terminal; the audio and video server is used for collecting audio or video data of a target customer and a salesman in a conversation process; the marketing management server is used for providing product information of each financial product; and the customer contact server is