Abstract: The construction scope of long-distance pipeline engineering is wide and its participating units and personnel are structurally complex, so the personnel management at the project site is very important for the construction of the engineering project. In this paper, a two-dimensional code based personnel management system of long-distance pipeline engineering was designed by means of mobile Internet technology, two-dimensional code technology and Internet of Things technology. This system consists of three parts, including WEB terminal, two-dimensional code ID card and mobile terminal, and it can realize the informatization management of field personnel. Then, this system was applied to one long-distance crude oil pipeline under construction. It is shown that by virtue of this system, the personal information, post responsibilities and qualification certificates of field personnel are effectively integrated and controlled, the post operation standardization of personnel is promoted, and the irregularities of field personnel are monitored and controlled, so that the level of project construction management is effectively improved, the project is completed in accordance with the stipulated quality, quantity and time, and the project investment is saved significantly.