The invention discloses a case port state conversion method, device and equipment and a storage medium. The method comprises the following steps: according to logic of an abstract D trigger, creatinga first variable representing a logic clock, a second variable representing a case port state inquired in real time, a third variable representing a case port state output by logic, and a fourth variable representing a storage latch state; identifying a current state of the storage device for carrying out case port state conversion; and according to the identification result, controlling the created variable value to determine whether to execute a case port state conversion operation or not. According to the method and the device, the case port state conversion is realized by utilizing the algorithm principle of the D trigger, so that the case port state conversion time can be shortened, the discovery frequency can be reduced, the unnecessary case port state conversion logic execution is reduced, the influence on the user service performance is reduced as much as possible, and the resource utilization rate of the storage equipment is improved.