A method for affinity binding of an interrupt of a virtual network interface card, wherein the method comprises: receiving a request message, wherein the request message carries an interrupt affinity policy parameter of a virtual network interface card; performing one-to-one correspondence affinity binding between multiple virtual central processing units, "VCPUs", and multiple physical central processing units, "PCPUs"; performing affinity binding between a virtual interrupt of the virtual network interface card and a VCPU; and performing affinity binding between a physical interrupt of the virtual network interface card and a corresponding PCPU according to the affinity policy parameter, wherein the performing affinity binding between a virtual interrupt of the virtual network interface card and a VCPU, and performing affinity binding between a physical interrupt of the virtual network interface card and a corresponding PCPU according to the affinity policy parameter specifically comprises: when the virtual interrupt of the virtual network interface card is in affinity binding with a first VCPU of the multiple VCPUs, performing binding between the physical interrupt of the virtual network interface card and a first PCPU of the multiple PCPUs according to the policy parameter, wherein the first VCPU is a VCPU in affinity binding with the first PCPU, wherein the method further comprises: when the virtual interrupt of the virtual network interface card changes to be in affinity binding with a second VCPU, performing binding between the physical interrupt of the virtual network interface card and a second PCPU, wherein the second VCPU is a VCPU in affinity binding with the second PCPU. receiving a request message, wherein the request message carries an interrupt affinity policy parameter of a virtual network interface card; performing one-to-one correspondence affinity binding between multiple virtual central processing units, "VCPUs", and multiple physical central processing units, "PCPUs"; performing affinity binding between a virtual interrupt of the virtual network interface card and a VCPU; and performing affinity binding between a physical interrupt of the virtual network interface card and a corresponding PCPU according to the affinity policy parameter, wherein the performing affinity binding between a virtual interrupt of the virtual network interface card and a VCPU, and performing affinity binding between a physical interrupt of the virtual network interface card and a corresponding PCPU according to the affinity policy parameter specifically comprises: when the virtual interrupt of the virtual network interface card is in affinity binding with a first VCPU of the multiple VCPUs, performing binding between the physical interrupt of the virtual network interface card and a first PCPU of the multiple PCPUs according to the policy parameter, wherein the first VCPU is a VCPU in affinity binding with the first PCPU, wherein the method further comprises: when the virtual interrupt of the virtual network interface card changes to be in affinity binding with a second VCPU, performing binding between the physical interrupt of the virtual network interface card and a second PCPU, wherein the second VCPU is a VCPU in affinity binding with the second PCPU. when the virtual interrupt of the virtual network interface card is in affinity binding with a first VCPU of the multiple VCPUs, performing binding between the physical interrupt of the virtual network interface card and a first PCPU of the multiple PCPUs according to the policy parameter, wherein the first VCPU is a VCPU in affinity binding with the first PCPU, wherein the method further comprises: when the virtual interrupt of the virtual network interface card changes to be in affinity binding with a second VCPU, performing binding between the physical interrupt of the virtual network interface card and a second PCPU, wherein the second VCPU is a VCPU in affinity binding with the second PCPU.