Pressure testing tool and using method thereof

The invention relates to the technical field of pressure measurement, in particular to a pressure testing tool and a using method thereof. The pressure testing tool comprises a gas pressure control component and an executing mechanism, wherein the gas pressure control component is connected to a gas containing mechanism through a pipeline, a corrugated pipe to be tested is arranged in the gas containing mechanism, the gas pressure control component can charge gas into the gas containing mechanism and exhaust the gas in the gas containing mechanism, and the gas pressure control component can detect the gas pressure of the gas containing mechanism. After the gas containing mechanism is filled with gas, the opening-end top rod arranged on the corrugated pipe to be tested can extend into the executing mechanism to keep the executing mechanism in a first position, and after the gas containing mechanism discharges at least part of the gas, the opening-end top rod of the corrugated pipe to betested can be separated