A method for determining an impact of a service access port to be added on a network and planning network construction, wherein the service access ports include the following classes: a 2G service access port, a 3G service access port, an LTE service access port, a WLAN service access port, a home customer service access port, and a corporate customer service access port, wherein the method comprises: acquiring data traffic information of existing service access ports by counting statistics on accumulated data traffic on the service access ports once every preset time length; classifying the service access ports according to the data traffic information of the service access ports, determining service access ports of a same class, and determining a data traffic model of a service access port of each class according to a proportion of data traffic on each service access port of the same class and in each sub-time period of each time period to all data traffic in each time period; and when it is determined that a new service access port is to be added to the network, determining a data traffic model corresponding to the new service access port that is to be added, according to port attribute information of the new service access port that is to be added and according to port attribute information of the service access ports corresponding to the data traffic model of a service access port of each class, wherein the port attribute information includes environment information and port class information; and determining, according to the data traffic model corresponding to the new service access port that is to be added, a data flow rate on the new service access port that is to be added; wherein after the determining a data flow rate on the new service access port that is to be added, the method further comprises: acquiring intra-ring data flow rate information of a network ring in which the new service access port that is to be added is located; determining, by adding the intra-ring data flow rate of the network ring and the data flow rate on the new service access port that is to be added, an intra-ring data flow rate of the network ring after the new service access port is added; determining, according to the intra-ring data flow rate of the network ring after the new service access port is added, a peak flow rate of the network ring after the new service access port is added; determining the intra-ring bandwidth utilization according to the intra-ring peak flow rate; and deciding whether the service access port can be constructed based on the intra-ring bandwidth utilization. acquiring data traffic information of existing service access ports by counting statistics on accumulated data traffic on the service access ports once every preset time length; classifying the service access ports according to the data traffic information of the service access ports, determining service access ports of a same class, and determining a data traffic model of a service access port of each class according to a proportion of data traffic on each service access port of the same class and in each sub-time period of each time period to all data traffic in each time period; and when it is determined that a new service access port is to be added to the network, determining a data traffic model corresponding to the new service access port that is to be added, according to port attribute information of the new service access port that is to be added and according to port attribute information of the service access ports corresponding to the data traffic model of a service access port of each class, wherein the port attribute information includes environment information and port class information; and determining, according to the data traffic model corresponding to the new service access port that is to be added, a data flow rate on the new service access port that is to be added; wherein after the determining a data flow rate on the new service access port that is to be added, the method further comprises: acquiring intra-ring data flow rate information of a network ring in which the new service access port that is to be added is located; determining, by adding the intra-ring data flow rate of the network ring and the data flow rate on the new service access port that is to be added, an intra-ring data flow rate of the network ring after the new service access port is added; determining, according to the intra-ring data flow rate of the network ring after the new service access port is added, a peak flow rate of the network ring after the new service access port is added; determining the intra-ring bandwidth utilization according to the intra-ring peak flow rate; and deciding whether the service access port can be constructed based on the intra-ring bandwidth utilization. acquiring intra-ring data flow rate information of a network ring in which the new service access port that is to be added is located; determining, by adding the intra-ring data flow rate of the network ring and the data flow rate on the new service access port that is to be added, an intra-ring data flow rate of the network ring after the new service access port is added; determining, according to the intra-ring data flow rate of the network ring after the new service access port is added, a peak flow rate of the network ring after the new service access port is added; determining the intra-ring bandwidth utilization according to the intra-ring peak flow rate; and deciding whether the service access port can be constructed based on the intra-ring bandwidth utilization.