Abstract: With dynamic two-dimensional code as its joint, BIM-QR system is composed of Tekla structures steel structural BIM model, a background server and mobile terminal. The BIM-QR system can upload mass information to the server. Then we can extract, gather, analyze and manage the information according to the demand, providing information management for the whole process, such as raw material purchasing, component production, component transportation, component quality acceptance, etc. This system is helpful for us to reduce the human input and is conducive to management. The dynamic two-dimensional code is to increase the encoding and decoding protocol proprietary protocol based on the two-dimensional code, so that the two-dimensional code can preserve both solid state information and dynamic information simultaneously. Using a mobile terminal to scan the two-dimensional code can quickly read the component information, and at the same time, the information of the import acceptance, plant acceptance, and the acceptance of installation will be uploaded to the server. The information is then updated to the BIM model through the Tekla Structures software plug-in. By changing the component in the model to change the color of the component in the display, it can reflect the different status of the component. The BIM model, mobile terminals and the backend server data are combined, by using dynamic two-dimensional code as the carrier. The construction quality acceptance management of steel structure is approached.