A service redirection method for a mobile edge computing, MEC, architecture, the method being performed by a service redirection apparatus: • receiving (step 501) a service request from a terminal device, wherein the service request is used to request a service related to a first edge application, APP; and • when the first edge APP is unavailable and a second edge APP is available, redirecting (step 502) the service request to the second edge APP, o wherein a first data network access identifier, DNAI, represents a deployment location of the first edge APP, so that the first DNAI corresponds to the first edge APP, o wherein a second DNAI represents a deployment location of the second edge APP, so that the second DNAI corresponds to the second edge APP, o wherein the second edge APP has a same service provider and a same function as the first edge APP, o wherein the first DNAI and the second DNAI belong to a same resource group, o wherein the redirecting is performed when the deployment locations represented by the first DNAI and the second DNAI meet a preset condition, and a condition met by any two DNAIs in the same resource group is the preset condition, wherein the condition met by any two DNAIs in the same resource group is that: ▪ base stations covered by access user plane functions, UPFs, corresponding to any two DNAIs in the resource group are neighboring base stations; or ▪ a packet transmission distance between data centers, DCs, corresponding to any two DNAIs in the resource group is less than or equal to a preset threshold. • receiving (step 501) a service request from a terminal device, wherein the service request is used to request a service related to a first edge application, APP; and • when the first edge APP is unavailable and a second edge APP is available, redirecting (step 502) the service request to the second edge APP, o wherein a first data network access identifier, DNAI, represents a deployment location of the first edge APP, so that the first DNAI corresponds to the first edge APP, o wherein a second DNAI represents a deployment location of the second edge APP, so that the second DNAI corresponds to the second edge APP, o wherein the second edge APP has a same service provider and a same function as the first edge APP, o wherein the first DNAI and the second DNAI belong to a same resource group, o wherein the redirecting is performed when the deployment locations represented by the first DNAI and the second DNAI meet a preset condition, and a condition met by any two DNAIs in the same resource group is the preset condition, wherein the condition met by any two DNAIs in the same resource group is that: ▪ base stations covered by access user plane functions, UPFs, corresponding to any two DNAIs in the resource group are neighboring base stations; or ▪ a packet transmission distance between data centers, DCs, corresponding to any two DNAIs in the resource group is less than or equal to a preset threshold. o wherein a first data network access identifier, DNAI, represents a deployment location of the first edge APP, so that the first DNAI corresponds to the first edge APP, o wherein a second DNAI represents a deployment location of the second edge APP, so that the second DNAI corresponds to the second edge APP, o wherein the second edge APP has a same service provider and a same function as the first edge APP, o wherein the first DNAI and the second DNAI belong to a same resource group, o wherein the redirecting is performed when the deployment locations represented by the first DNAI and the second DNAI meet a preset condition, and a condition met by any two DNAIs in the same resource group is the preset condition, wherein the condition met by any two DNAIs in the same resource group is that: ▪ base stations covered by access user plane functions, UPFs, corresponding to any two DNAIs in the resource group are neighboring base stations; or ▪ a packet transmission distance between data centers, DCs, corresponding to any two DNAIs in the resource group is less than or equal to a preset threshold. ▪ base stations covered by access user plane functions, UPFs, corresponding to any two DNAIs in the resource group are neighboring base stations; or ▪ a packet transmission distance between data centers, DCs, corresponding to any two DNAIs in the resource group is less than or equal to a preset threshold.