A clock circuit, comprising: a data strobe clock module, configured to receive a data strobe clock signal and transmit the data strobe clock signal, wherein the data strobe clock signal is used for controlling at least one of receiving or sending of a data signal; and a system clock module, configured to receive a system clock signal and transmit the system clock signal, wherein the system clock signal is used for controlling receiving of a command signal; characterized in that the system clock module comprises at least two first signal transmission paths, and is configured to transmit the system clock signal via different first signal transmission paths among the at least two first signal transmission paths based on at least one of: different receiving rates, or sending rates of the data signal; the data strobe clock module comprises at least two second signal transmission paths, the data strobe clock signal is transmitted via different second signal transmission paths among the at least two second signal transmission paths at different transmission rates, each of the transmission rates corresponds to a respective one of the at least one of: the receiving rates, or the sending rates, and each of the second signal transmission paths is matched with a respective one of the first signal transmission paths; and wherein the system clock module is configured to transmit, when the data strobe clock signal is transmitted via a second signal transmission path in the second signal transmission paths, the system clock signal via the first signal transmission path matching with the second signal transmission path, wherein the data strobe clock module further comprises a first data strobe clock transmission circuit and a second data strobe clock transmission circuit, and the first data strobe clock transmission circuit and the second data strobe clock transmission circuit define the different second signal transmission paths; wherein the system clock module further comprises a first system clock transmission circuit and a second system clock transmission circuit, and the first system clock transmission circuit and the second system clock transmission circuit define the different first signal transmission paths, and wherein the first system clock transmission circuit is configured to match the first data strobe clock transmission circuit, and the second system clock transmission circuit is configured to match the second data strobe clock transmission circuit. a data strobe clock module, configured to receive a data strobe clock signal and transmit the data strobe clock signal, wherein the data strobe clock signal is used for controlling at least one of receiving or sending of a data signal; and a system clock module, configured to receive a system clock signal and transmit the system clock signal, wherein the system clock signal is used for controlling receiving of a command signal; characterized in that the system clock module comprises at least two first signal transmission paths, and is configured to transmit the system clock signal via different first signal transmission paths among the at least two first signal transmission paths based on at least one of: different receiving rates, or sending rates of the data signal; the data strobe clock module comprises at least two second signal transmission paths, the data strobe clock signal is transmitted via different second signal transmission paths among the at least two second signal transmission paths at different transmission rates, each of the transmission rates corresponds to a respective one of the at least one of: the receiving rates, or the sending rates, and each of the second signal transmission paths is matched with a respective one of the first signal transmission paths; and wherein the system clock module is configured to transmit, when the data strobe clock signal is transmitted via a second signal transmission path in the second signal transmission paths, the system clock signal via the first signal transmission path matching with the second signal transmission path, wherein the data strobe clock module further comprises a first data strobe clock transmission circuit and a second data strobe clock transmission circuit, and the first data strobe clock transmission circuit and the second data strobe clock transmission circuit define the different second signal transmission paths; wherein the system clock module further comprises a first system clock transmission circuit and a second system clock transmission circuit, and the first system clock transmission circuit and the second system clock transmission circuit define the different first signal transmission paths, and wherein the first system clock transmission circuit is configured to match the first data strobe clock transmission circuit, and the second system clock transmission circuit is configured to match the second data strobe clock transmission circuit.