The invention relates to an intellectual high temperature high pressure dynamic stopping leak appraisal device in the field of oil exploration and development excremental device. it is formed by a gas source, a mud pump, a piston-type high temperature high pressure mud bottle, a steel leaked bed holder, a work holder, a rock core holder, a flow-meter, an electric dissimilar, a ring pressure pump, a return pressure controller, a liquid circulating pipe, a control line, a data collector, a computer and a printer and so on. It arranges the drilling fluid of the leak agent into the mud bottle on the condition of temperature, pressure, flow speed of the simulated formation; it then uses mud pump to drive the borehole fluid of the piston-type high temperature high pressure mud bottle and dose leak damage experiment to the steel leaked bed holder, the artificial slit plate and the formation rock core to achieve the indoor correct evaluation of the leak effect of the drilling fluid and the well completion fluid.