1. A method of providing negative pressure in a dressing for treating wounds with negative pressure, comprising the steps of: providing a pumping device having a pump； setting a therapeutic negative pressure in the pumping device, the pumping device determining the target negative pressure relating to the treatment negative pressure, and target negative pressure is less than treatment negative pressure； connecting the pumping device to the dressing for treating wounds with negative pressure m； achieving the target negative pressure by: cycling the pump on and off to create negative pressure in the dressing for treating wounds with negative pressure； obtaining a plurality of negative pressure measurements in the dressing for treating wounds with negative pressure, with each measurement result being obtained at the first scheduled time interval； calculating the average value in advance of a given number of consecutive measurement results； comparing the average value with the target from itsatelnym pressure； and continue cycling the pump on and off until the average value is greater than the target pressure. 2. The method according to claim 1, characterized in that it further comprises the steps: after the step of cyclic turning the pump on and off until the average value of the measurement results becomes larger than the target pressure, after the completion of the shutdown cycle, measuring the negative pressure in the dressing for treatment negative pressure in the second scheduled time interval,1. Способ обеспечения отрицательного давления в повязке для лечения ран отрицательным давлением, состоящий из шагов:обеспечения насосного устройства, имеющего насос；задания лечебного отрицательного давления в насосном устройстве, при этом насосное устройство производит определение целевого отрицательного давления, относящегося к лечебному отрицательному давлению, и целевое отрицательное давление является меньшим, чем лечебное отрицательное давление；подключения насосного устро
