The Spring and Autumn bronze Ding with intertwined hydra patterns from the tomb of Prince Zheng in Shenzhen Museum had been restored before entering the museum, but the record of restoration is missing. The aging of the original protective and repair materials due to the long time and the influence of the preservation environment has caused the left and right legs to break and drop off from the original welding places. There are also many cracks and other diseases. Therefore, the Ding needs urgent conservation and repair again in order to restore its integrity and stability and to enhance the display effect. In this study, the material compositions, manufacturing techniques, early repair materials, treatment methods and diseases of the Ding were analyzed using X-ray detection, XRF, FTIR and XRD, etc. The results show that the Ding is made of a ternary alloy of copper, tin and lead, the body is covered with repair, welding and distressing marks, and there are many cracks. Brass sheets were used for patching (the white patching material is a powdered mixture of gypsum and potassium alum). A lead-tin material was used for welding. No chlorine element was found. The study results provide a sufficient basis for further understanding the value of the Ding, scientifically assessing its preservation status and degree of disease, and carrying out scientific and effective re-conservation and restoration.