A network service system, comprising: a multi-access edge computing cloud server (MEC), configured to receive a service request from a terminal device (TD); and a core cloud server (CCS), configured to report all running service identification information to the multi-access edge computing cloud server (MEC); wherein the multi-access edge computing cloud server (MEC) is configured to determine whether an application corresponding to the service request exists in the multi-access edge computing cloud server (MEC) according to the service identification information reported by the core cloud server (CCS), wherein the multi-access edge computing cloud server (MEC) is configured to determine that the application corresponding to the service request does not exist in the multi-access edge computing cloud server (MEC), and for directing the terminal device (TD) to the core cloud server (CCS) in that case, and wherein the core cloud server (CCS) is configured to provide the application to the terminal device (TD); wherein the multi-access edge computing cloud server (MEC) is configured to start to run the application after the determination that the application corresponding to the service request does not exist in the multi-access edge computing cloud server (MEC), and the core cloud server (CCS) is configured to transmit a current state of the application being run by the core cloud server (CCS) to the multi-access edge computing cloud server (MEC), and the multi-access edge computing cloud server (MEC) is configured to direct the terminal device (TD) to the multi-access edge computing cloud server (MEC), and the multi-access edge computing cloud server (MEC) is configured to provide the application to the terminal device (TD) after the multi-access edge computing cloud server (MEC) integrates the current state with the application being run by the multi-access edge computing cloud server (MEC). a multi-access edge computing cloud server (MEC), configured to receive a service request from a terminal device (TD); and a core cloud server (CCS), configured to report all running service identification information to the multi-access edge computing cloud server (MEC); wherein the multi-access edge computing cloud server (MEC) is configured to determine whether an application corresponding to the service request exists in the multi-access edge computing cloud server (MEC) according to the service identification information reported by the core cloud server (CCS), wherein the multi-access edge computing cloud server (MEC) is configured to determine that the application corresponding to the service request does not exist in the multi-access edge computing cloud server (MEC), and for directing the terminal device (TD) to the core cloud server (CCS) in that case, and wherein the core cloud server (CCS) is configured to provide the application to the terminal device (TD); wherein the multi-access edge computing cloud server (MEC) is configured to start to run the application after the determination that the application corresponding to the service request does not exist in the multi-access edge computing cloud server (MEC), and the core cloud server (CCS) is configured to transmit a current state of the application being run by the core cloud server (CCS) to the multi-access edge computing cloud server (MEC), and the multi-access edge computing cloud server (MEC) is configured to direct the terminal device (TD) to the multi-access edge computing cloud server (MEC), and the multi-access edge computing cloud server (MEC) is configured to provide the application to the terminal device (TD) after the multi-access edge computing cloud server (MEC) integrates the current state with the application being run by the multi-access edge computing cloud server (MEC). <EOS>