A method for obtaining uplink channel state information, comprising: determining, by a network side device, Sounding Reference Signal, SRS, resource configuration information based on a preset bandwidth parameter, a preset frequency domain density parameter and a preset time domain parameter, in a case that the network side device determines to obtain the uplink channel state information; sending, by the network side device, the SRS resource configuration information to a terminal; receiving, by the network side device, at least one SRS reported by the terminal based on the SRS resource configuration information; and measuring, by the network side device, an uplink channel used by the terminal based on the at least one SRS, and determining the corresponding uplink channel state information; wherein, the determining, by the network side device, the SRS resource configuration information based on the preset bandwidth parameter, the preset frequency domain density parameter and the preset time domain parameter, further comprises: determining, by the network side device, a bandwidth configuration of at least one SRS resource based on the preset bandwidth parameter; determining, by the network side device, a frequency domain density of the at least one SRS resource based on the preset frequency domain density parameter; wherein the method is characterised by: determining, by the network side device, a time domain parameter N corresponding to the at least one SRS resource based on a type of a service request or uplink channel quality information of a known terminal; and determining, by the network side device, the SRS resource configuration information of the at least one SRS resource based on the bandwidth configuration, the frequency domain density and the time domain parameter N; wherein the terminal is instructed to send the at least one SRS in a frequency hopping manner on N Orthogonal Frequency Division Multiplexing, OFDM, symbols within one slot in response to a value of N being greater than 1; and e terminal is instructed to send the at least one SRS in a frequency hopping manner across different slots in response to a value of N being equal to 1. determining, by a network side device, Sounding Reference Signal, SRS, resource configuration information based on a preset bandwidth parameter, a preset frequency domain density parameter and a preset time domain parameter, in a case that the network side device determines to obtain the uplink channel state information; sending, by the network side device, the SRS resource configuration information to a terminal; receiving, by the network side device, at least one SRS reported by the terminal based on the SRS resource configuration information; and measuring, by the network side device, an uplink channel used by the terminal based on the at least one SRS, and determining the corresponding uplink channel state information; wherein, the determining, by the network side device, the SRS resource configuration information based on the preset bandwidth parameter, the preset frequency domain density parameter and the preset time domain parameter, further comprises: determining, by the network side device, a bandwidth configuration of at least one SRS resource based on the preset bandwidth parameter; determining, by the network side device, a frequency domain density of the at least one SRS resource based on the preset frequency domain density parameter; wherein the method is characterised by: determining, by the network side device, a time domain parameter N corresponding to the at least one SRS resource based on a type of a service request or uplink channel quality information of a known terminal; and determining, by the network side device, the SRS resource configuration information of the at least one SRS resource based on the bandwidth configuration, the frequency domain density and the time domain parameter N; wherein the terminal is instructed to send the at least one SRS in a frequency hopping manner on N Orthogonal Frequency Division Multiplexing, OFDM, symbols within one slot in response to a value of N being greater than 1; and e terminal is instructed to send the at least one SRS in a frequency hopping manner across different slots in response to a value of N being equal to 1. determining, by the network side device, a bandwidth configuration of at least one SRS resource based on the preset bandwidth parameter; determining, by the network side device, a frequency domain density of the at least one SRS resource based on the preset frequency domain density parameter; wherein the method is characterised by: determining, by the network side device, a time domain parameter N corresponding to the at least one SRS resource based on a type of a service request or uplink channel quality information of a known terminal; and determining, by the network side device, the SRS resource configuration information of the at least one SRS resource based on the bandwidth configuration, the frequency domain density and the time domain parameter N; wherein the terminal is instructed to send the at least one SRS in a frequency hopping manner on N Orthogonal Frequency Division Multiplexing, OFDM, symbols within one slot in response to a value of N being greater than 1; and e terminal is instructed to send the at least one SRS in a frequency hopping manner across different slots in response to a value of N being equal to 1.