Nowadays，the functions of electronic products are more and more complex, and then different kinds of chips, such as MCU, ADC, memories, interface chips and so on, will be selected in the PCB design. In this case, the clock management circuit is needed to provide different working clocks for each chip. It manages several clock signals in part of frequency and phase, etc, and improves signals in part of cycle duty, jitter, etc. The newtype clock management circuit based on the clock chip is designed in this paper，which consist of the clock management circuit unit and the clock management IP core in the control unit. The important components and the whole circuit are selected to build math models and be analyzed. The method for selecting circuit parameters and the relationship between circuit parameters and system parameters are concluded, which are the references for the detailed circuit design and software configuration.