Abstract：Based on the general plan and preliminary work, for larger flow rates at the breakwater entrance and exists circum原
fluence in harbor district, optimizing layout of the breakwater entrance by using pertinence measures refer to previous experi原
ences. Through mathematical and physical model tests to verify, in order to reduce flow rate of entrance, and reduce the effect
of the strong backflow generated by strong flow rate at entrance for vessels忆entering and leaving the port.