A network node selection method performed by an underlying network site, comprising: acquiring network node selection information from one or more moving network nodes, wherein the network node selection information is used for selecting a moving network node to be activated, and the network node selection information comprises at least one of: tolerable residing time of the moving network node, wherein the tolerable residing time indicates time elapsing from a moment the moving network node receives a network information inquiry request to a moment the moving network node leaves a current position or time elapsing from a moment the moving network node initiatively sends the network node selection information to a moment the moving network node leaves a current position, wherein the network information inquiry request is a request sent by the underlying network site to the moving node to acquire the network node selection information; coverage range of the moving network node, wherein the coverage range refers to a maximum coverage distance the moving network node is able to provide in a current position under a specific transmitting power or a maximum transmitting power; or wireless access information of the moving network node, wherein the wireless access information indicates a type of an access network which is able to be provided by the moving network node; and selecting a moving network node to be activated from the one or more moving network nodes according to the network node selection information and sending a node activation command message to the moving network node to be activated. acquiring network node selection information from one or more moving network nodes, wherein the network node selection information is used for selecting a moving network node to be activated, and the network node selection information comprises at least one of: tolerable residing time of the moving network node, wherein the tolerable residing time indicates time elapsing from a moment the moving network node receives a network information inquiry request to a moment the moving network node leaves a current position or time elapsing from a moment the moving network node initiatively sends the network node selection information to a moment the moving network node leaves a current position, wherein the network information inquiry request is a request sent by the underlying network site to the moving node to acquire the network node selection information; coverage range of the moving network node, wherein the coverage range refers to a maximum coverage distance the moving network node is able to provide in a current position under a specific transmitting power or a maximum transmitting power; or wireless access information of the moving network node, wherein the wireless access information indicates a type of an access network which is able to be provided by the moving network node; and tolerable residing time of the moving network node, wherein the tolerable residing time indicates time elapsing from a moment the moving network node receives a network information inquiry request to a moment the moving network node leaves a current position or time elapsing from a moment the moving network node initiatively sends the network node selection information to a moment the moving network node leaves a current position, wherein the network information inquiry request is a request sent by the underlying network site to the moving node to acquire the network node selection information; coverage range of the moving network node, wherein the coverage range refers to a maximum coverage distance the moving network node is able to provide in a current position under a specific transmitting power or a maximum transmitting power; or wireless access information of the moving network node, wherein the wireless access information indicates a type of an access network which is able to be provided by the moving network node; and selecting a moving network node to be activated from the one or more moving network nodes according to the network node selection information and sending a node activation command message to the moving network node to be activated.