A network load balancer, comprising: a network port and N intermediate chips, N is a positive integer greater than or equal to 1; when N>1, the N intermediate chips are connected in sequence; the network port is connected to a first intermediate chip among the N intermediate chips; the network port is configured to receive a request message and forward the request message to the first intermediate chip; each of the intermediate chips is configured to forward the request message to a next intermediate chip connected to a current intermediate chip if connection information matching the request message is not found; and directly transmit the request message to a background server according to the connection information if the connection information matching the request message is found; the network load balancer further comprises a processor; the first intermediate chip among the N intermediate chips is configured to forward the request message to the processor if the connection information matching the request message is not found by all of the intermediate chips, wherein the processor is configured to transmit the request message to the background server; when the processor transmits the request message to the background server, the processor is specifically configured to: query the connection information matching the request message in a stored full connection table; and transmit the request message to the background server according to the queried connection information matching the request message; wherein each of the intermediate chips is specifically configured to: acquire address information from the request message, and query the connection information matching the request message in a connection table stored in the current intermediate chip according to the address information; wherein the connection table stored in each of the intermediate chips corresponds to each of the intermediate chips one by one, and the connection table stored in the intermediate chip is configured to indicate a corresponding relationship between address information and connection information. the network port is configured to receive a request message and forward the request message to the first intermediate chip; each of the intermediate chips is configured to forward the request message to a next intermediate chip connected to a current intermediate chip if connection information matching the request message is not found; and directly transmit the request message to a background server according to the connection information if the connection information matching the request message is found; the network load balancer further comprises a processor; the first intermediate chip among the N intermediate chips is configured to forward the request message to the processor if the connection information matching the request message is not found by all of the intermediate chips, wherein the processor is configured to transmit the request message to the background server; when the processor transmits the request message to the background server, the processor is specifically configured to: query the connection information matching the request message in a stored full connection table; and transmit the request message to the background server according to the queried connection information matching the request message; wherein each of the intermediate chips is specifically configured to: acquire address information from the request message, and query the connection information matching the request message in a connection table stored in the current intermediate chip according to the address information; wherein the connection table stored in each of the intermediate chips corresponds to each of the intermediate chips one by one, and the connection table stored in the intermediate chip is configured to indicate a corresponding relationship between address information and connection information. query the connection information matching the request message in a stored full connection table; and transmit the request message to the background server according to the queried connection information matching the request message; wherein each of the intermediate chips is specifically configured to: acquire address information from the request message, and query the connection information matching the request message in a connection table stored in the current intermediate chip according to the address information; wherein the connection table stored in each of the intermediate chips corresponds to each of the intermediate chips one by one, and the connection table stored in the intermediate chip is configured to indicate a corresponding relationship between address information and connection information. acquire address information from the request message, and query the connection information matching the request message in a connection table stored in the current intermediate chip according to the address information; wherein the connection table stored in each of the intermediate chips corresponds to each of the intermediate chips one by one, and the connection table stored in the intermediate chip is configured to indicate a corresponding relationship between address information and connection information.