A channel state measurement method performed by a network device, the method comprising: • selecting (S 210), from N channel state information-reference signal CSI-RS resources, a target CSI-RS resource and a target channel state information-interference measurement CSI-IM resource group associated with the target CSI-RS resource, wherein the target CSI-IM resource group comprises a CSI-RS resource in the N CSI-RS resources, an i th CSI-RS resource in the N CSI-RS resources is associated with n i CSI-IM resource groups, and a k th CSI-IM resource group in the n i CSI-IM resource groups comprises x ik CSI-RS resources in the N CSI-RS resources except the i th CSI-RS resource, wherein N, i, n i, k, and x ik are all integers, N ≥2, 1≤ n i ≤ N, k =1,2,...,n i, 0 ≤ x ik ≤ N - 1, wherein identifiers of the N CSI-RS resources are 1,2,..., N, and a set of identifiers of CSI-RS resources comprised in the k th CSI-IM resource group in the n i CSI-IM resource groups associated with the i th CSI-RS resource is: ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + 1, ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + 2,..., ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + x ik + 1 / i, wherein a set A/a set B represents a set of remaining elements in the set A after elements in the set B are removed from the set A; and • sending (S 220)first indication information by using first signaling to a terminal device, wherein the first indication information is used to indicate the target CSI-RS resource and the target CSI-IM resource group (S 220); • receiving a channel quality indicator, CQI, from the terminal device, wherein the CQI is determined by the terminal device based on a channel coefficient measured by the terminal device on the target CSI-RS resource and interference measured by the terminal device on the CSI-RS resource in the target CSI-IM resource group (S 240). • selecting (S 210), from N channel state information-reference signal CSI-RS resources, a target CSI-RS resource and a target channel state information-interference measurement CSI-IM resource group associated with the target CSI-RS resource, wherein the target CSI-IM resource group comprises a CSI-RS resource in the N CSI-RS resources, an i th CSI-RS resource in the N CSI-RS resources is associated with n i CSI-IM resource groups, and a k th CSI-IM resource group in the n i CSI-IM resource groups comprises x ik CSI-RS resources in the N CSI-RS resources except the i th CSI-RS resource, wherein N, i, n i, k, and x ik are all integers, N ≥2, 1≤ n i ≤ N, k =1,2,...,n i, 0 ≤ x ik ≤ N - 1, wherein identifiers of the N CSI-RS resources are 1,2,..., N, and a set of identifiers of CSI-RS resources comprised in the k th CSI-IM resource group in the n i CSI-IM resource groups associated with the i th CSI-RS resource is: ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + 1, ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + 2,..., ⌊ i − 1 x ik + 1 ⌋ x ik + 1 + x ik + 1 / i, wherein a set A/a set B represents a set of remaining elements in the set A after elements in the set B are removed from the set A; and • sending (S 220)first indication information by using first signaling to a terminal device, wherein the first indication information is used to indicate the target CSI-RS resource and the target CSI-IM resource group (S 220); • receiving a channel quality indicator, CQI, from the terminal device, wherein the CQI is determined by the terminal device based on a channel coefficient measured by the terminal device on the target CSI-RS resource and interference measured by the terminal device on the CSI-RS resource in the target CSI-IM resource group (S 240).