A method for configuring a channel state information reference signal, comprising: dividing multiple access points of coordinated transmission into a first access point set and a second access point set, wherein the first access point set comprises M access points, and the second access point set comprises N access points; configuring a first channel state information reference signal CSI-RS pilot pattern, a second CSI-RS pilot pattern, and a third CSI-RS pilot pattern for a user equipment UE, wherein the first CSI-RS pilot pattern is an X-port CSI-RS pilot pattern, the X-port CSI-RS pilot pattern comprises M CSI-RS pilot patterns which respectively have a port number of Jm, Jm is an antenna port number of an mth access point in the first access point set, m=1,... M, and X is a sum of antenna port numbers of the M access points in the first access point set; the second CSI-RS pilot pattern is a Y-port CSI-RS pilot pattern, the Y-port CSI-RS pilot pattern comprises N CSI-RS pilot patterns which respectively have a port number of Gn, Gn is an antenna port number of an nth access point in the second access point set, n=1,... N, wherein N≥2, and Y is a sum of antenna port numbers of the N access points in the second access point set; and the third CSI-RS pilot pattern is a 2-port CSI-RS pilot pattern, which comprises a CSI-RS pilot pattern with an antenna port number of 2; respectively configuring the first CSI-RS pilot pattern, the second CSI-RS pilot pattern, and the third CSI-RS pilot pattern to the first access point set, the second access point set, and an antenna set formed by a first antenna of the first access point set and a first antenna of the second access point set, so that each access point in the first access point set sends a first non-zero power CSI-RS according to the first CSI-RS pilot pattern, each access point in the second access point set sends a second non-zero power CSI-RS according to the second CSI-RS pilot pattern, and the antenna set sends a third non-zero power CSI-RS according to the third CSI-RS pilot pattern; sending non-zero power CSI-RS configuration information to the UE, wherein the configuration information comprises the first CSI-RS pilot pattern, the second CSI-RS pilot pattern, and the third CSI-RS pilot pattern, so that the UE measures and reports first downlink channel state information according to the first CSI-RS pilot pattern, measures and reports second downlink channel state information according to the second CSI-RS pilot pattern, and measures and reports third downlink channel state information according to the third CSI-RS pilot pattern; and generating joint downlink channel state information according to the first downlink channel state information, the second downlink channel state information, and the third downlink channel state information, which are reported by the UE. dividing multiple access points of coordinated transmission into a first access point set and a second access point set, wherein the first access point set comprises M access points, and the second access point set comprises N access points; configuring a first channel state information reference signal CSI-RS pilot pattern, a second CSI-RS pilot pattern, and a third CSI-RS pilot pattern for a user equipment UE, wherein the first CSI-RS pilot pattern is an X-port CSI-RS pilot pattern, the X-port CSI-RS pilot pattern comprises M CSI-RS pilot patterns which respectively have a port number of Jm, Jm is an antenna port number of an mth access point in the first access point set, m=1,... M, and X is a sum of antenna port numbers of the M access points in the first access point set; the second CSI-RS pilot pattern is a Y-port CSI-RS pilot pattern, the Y-port CSI-RS pilot pattern comprises N CSI-RS pilot patterns which respectively have a port number of Gn, Gn is an antenna port number of an nth access point in the second access point set, n=1,... N, wherein N≥2, and Y is a sum of antenna port numbers of the N access points in the second access point set; and the third CSI-RS pilot pattern is a 2-port CSI-RS pilot pattern, which comprises a CSI-RS pilot pattern with an antenna port number of 2; respectively configuring the first CSI-RS pilot pattern, the second CSI-RS pilot pattern, and the third CSI-RS pilot pattern to the first access point set, the second access point set, and an antenna set formed by a first antenna of the first access point set and a first antenna of the second access point set, so that each access point in the first access point set sends a first non-zero power CSI-RS according to the first CSI-RS pilot pattern, each access point in the second access point set sends a second non-zero power CSI-RS according to the second CSI-RS pilot pattern, and the antenna set sends a third non-zero power CSI-RS according to the third CSI-RS pilot pattern; sending non-zero power CSI-RS configuration information to the UE, wherein the configuration information comprises the first CSI-RS pilot pattern, the second CSI-RS pilot pattern, and the third CSI-RS pilot pattern, so that the UE measures and reports first downlink channel state information according to the first CSI-RS pilot pattern, measures and reports second downlink channel state information according to the second CSI-RS pilot pattern, and measures and reports third downlink channel state information according to the third CSI-RS pilot pattern; and generating joint downlink channel state information according to the first downlink channel state information, the second downlink channel state information, and the third downlink channel state information, which are reported by the UE.