Dynamic experiment evaluating method for temporary plugging effect of temporary plugging agent in crack

The invention provides a dynamic experiment evaluating method for a temporary plugging effect of a temporary plugging agent in a crack. The dynamic experiment evaluating method is achieved through a dynamic experiment evaluating device for the temporary plugging effect of the temporary plugging agent in the crack. The device comprises a buffering tank, a damping pipe, a liquid pool, a first centrifugal pump, a first pressure meter, a damping plug, a first valve, a second valve, a first hydraulic pipeline, a second hydraulic pipeline and a third hydraulic pipeline. The method comprises the steps that the second valve is turned on, the first valve is turned off, and a preset amount of the temporary plugging agent is added into the buffering tank; the first centrifugal pump is started, liquidis pumped into the buffering tank and mixed with the temporary plugging agent, then the mixture enters the damping pipe, and the temporary plugging agent starts to cement while the damping plug is pushed to move; and under t