The embodiment of the invention discloses a timing method for a mobile network, devices and a readable storage medium. The mobile network includes a first clock, a first network, a first network device, and a second network device. The first network device obtains timing information from the first clock through the first network, calibrates the second network device clock of the second network device according to the timing information, and calibrates a terminal clock of the terminal device according to the calibrated second network device clock.