Expression sending method and device

The embodiment of the invention provides an expression sending method and device which are applied to a client, the client provides a session interface, and the method comprises the following steps: obtaining a session message data packet, wherein the session message data packet comprises a session message data packet generated based on a detected expression sending instruction for an expression element in a session interface and a session message data packet received from a server; judging whether the session message data packet has expression enhancement information or not, wherein the expression enhancement information comprises expression elements which can be combined in a preset time interval; and if the session message data packet has the expression enhancement information, displaying a combined expression enhancement special effect associated with the expression enhancement information on a session interface. By defining the data format of the session message data packet triggered and sent under the c