A method for implementing a service function, the method comprising: receiving an instant message sent in an instant conversation by a conversation participant, wherein the instant message was sent by a device of the conversation participant; determining whether content of the received instant message in the instant conversation meets a preset trigger condition integrating two preset trigger conditions corresponding to a particular service type, wherein the content of the received instant message is processed by a keyword matching method to determine whether the content of the received instant message corresponds to a first of the preset trigger conditions defining a keyword corresponding to the particular service type, and wherein a second of the preset trigger conditions includes a semantic analysis result for contents of several instant messages adjacent to the instant message being consistent with the particular service type determined to correspond to the received instant message for the first preset trigger condition; generating a service task of the service type associated with the content of the instant message in response to the content of the instant message meeting the preset trigger condition of the particular service type that integrates the two preset trigger conditions; sending an instruction to display a shortcut operation item to the device of the conversation participant who intends to initiate the service task when the content meets the preset trigger condition, the shortcut operation item being used to initiate the service task of the service type by the device of the conversation participant, wherein the instruction to display the shortcut operation item includes an address of a server for executing the service task; receiving a request initiated by the device based on the shortcut operation item for executing the service task, wherein the request includes a service parameter for initiating the request that is added at the device; and executing the service task corresponding to the shortcut operation item. receiving an instant message sent in an instant conversation by a conversation participant, wherein the instant message was sent by a device of the conversation participant; determining whether content of the received instant message in the instant conversation meets a preset trigger condition integrating two preset trigger conditions corresponding to a particular service type, wherein the content of the received instant message is processed by a keyword matching method to determine whether the content of the received instant message corresponds to a first of the preset trigger conditions defining a keyword corresponding to the particular service type, and wherein a second of the preset trigger conditions includes a semantic analysis result for contents of several instant messages adjacent to the instant message being consistent with the particular service type determined to correspond to the received instant message for the first preset trigger condition; generating a service task of the service type associated with the content of the instant message in response to the content of the instant message meeting the preset trigger condition of the particular service type that integrates the two preset trigger conditions; sending an instruction to display a shortcut operation item to the device of the conversation participant who intends to initiate the service task when the content meets the preset trigger condition, the shortcut operation item being used to initiate the service task of the service type by the device of the conversation participant, wherein the instruction to display the shortcut operation item includes an address of a server for executing the service task; receiving a request initiated by the device based on the shortcut operation item for executing the service task, wherein the request includes a service parameter for initiating the request that is added at the device; and executing the service task corresponding to the shortcut operation item.