A method for updating a manner of processing a packet of a service flow, wherein a first packet of the service flow is forwarded by using a first service function chain, SFC, and the method comprises: obtaining , by a control node, a flow identifier and indication information from a service function, SF, node of the first SFC, wherein the indication information is used to indicate a manner of processing a second packet of the service flow, the flow identifier is used to identify the service flow, and the second packet reaches a processing node later than the first packet; obtaining , by the control node according to the indication information, the manner of processing the second packet, wherein the manner of processing comprises not forwarding the second packet along the first SFC; and sending , by the control node, the flow identifier and the manner of processing the second packet to the processing node; and wherein the obtaining, by the control node according to the indication information, the manner of processing the second packet comprises: determining, by the control node, a service type of the service flow according to the indication information; and obtaining, by the control node, an identifier, ID, of a second SFC according to the service type of the service flow, wherein the second SFC is used to forward the second packet; or wherein the obtaining, by the control node according to the indication information, the manner of processing the second packet comprises: determining, by the control node, a processing instruction for the second packet according to the indication information, wherein the processing instruction is to discard the second packet or skip the SF node. obtaining , by a control node, a flow identifier and indication information from a service function, SF, node of the first SFC, wherein the indication information is used to indicate a manner of processing a second packet of the service flow, the flow identifier is used to identify the service flow, and the second packet reaches a processing node later than the first packet; obtaining , by the control node according to the indication information, the manner of processing the second packet, wherein the manner of processing comprises not forwarding the second packet along the first SFC; and sending , by the control node, the flow identifier and the manner of processing the second packet to the processing node; and wherein the obtaining, by the control node according to the indication information, the manner of processing the second packet comprises: determining, by the control node, a service type of the service flow according to the indication information; and obtaining, by the control node, an identifier, ID, of a second SFC according to the service type of the service flow, wherein the second SFC is used to forward the second packet; or wherein the obtaining, by the control node according to the indication information, the manner of processing the second packet comprises: determining, by the control node, a processing instruction for the second packet according to the indication information, wherein the processing instruction is to discard the second packet or skip the SF node. <EOS>