Based on the actual situation of Nanning Yinghua Bridge and the limitations of the conventional pin-joint sling and the anchor head bearing sling, this paper develops a sling with new pin-joint structure and adjusting device to meet the use and construction requirements of Nanning Yinghua Bridge sling. This paper mainly introduces the design process of pin joint structure, new adjusting device and sling tension scheme, and proves the feasibility of the new sling through application in Nanning Yinghua Bridge.