The invention belongs to the field of guide pipe sampling technologies, and particularly relates to a guide pipe sampling method. The guide pipe sampling method comprises the steps that firstly, a guide pipe with the certain hardness is provided, is bent in a certain trend according to an airplane layout, and is sleeved with a flaky part; and secondly, guide pipe connector process parts are manufactured and mounted at the two ends of the guide pipe, the connector process parts are connected with guide pipe mounting connectors, the flaky part is moved according to the trend of the guide pipe, the passing ability of the guide pipe is verified, and guide pipe sampling is achieved. According to the guide pipe sampling method, by arranging the process connectors on the guide pipe, real sample sampling and preparation and the verification process are combined, the period is greatly shortened, the process connectors can be used repeatedly, the guide pipe sampling period is effectively shortened, and the sampling cost is lowered.