The bronze drum, which has a history of more than 2 700 years, is an important instrument used in festivals, military events, weddings and funerals, sacrifices, ritual music and other oceasions in the southern minority areas. In order to make a scientific evaluation of the corrosion status and provide scientific guidance for the formulation of the technical route of protection and restoration of utensils and the development of repair work, the metallographic microscope, laser micro-Raman spoctrometer(RS) and environmental seanning electron microscope and energe dispersive spectrometer (ESEM-EDS) were used to analyze the metallographic structure, alloy composition and corrosion products of the seven bronze drums unearthed in Yulin area.The analysis results show that 1) the seven bronze drums are all cast and there is no forging and cold or hot working phenomena; 2) all seven bronze drums are made of a lead-tin bronze alloy which is characterized by low tin and high lead. The microstructure is a typical α-solid solution dendrite segregation. The tin content is between 6% and 12.2%, which is at the medium content level (5%≤Sn＜15%) and the distribution is more concentrated; the lead content is between 14.4% and 28.2% which is at the medium (10%≤Pb＜15%) to high (Pb≥15%) content level, and its distribution is also more concentrated. The proportion of high lead content in the alloy should be regarded as the proportion of craftsman’s intentional alloy; 3) the corrosion type of the bronze drums is α-solid solution copper-rich phase priority type. The preservation environment is mainly rich in oxygen and has less in chlorine. Corrosion products on the surface of the bronze drums are mainly green malachite,blue azurite and oxides,as well as a small amount of white lead. In conservation and restoration, the harmless rust could be retained without handling, but soil dirt mixed on the surface of the bronze drums needs to be cleaned and removed. Attention should be paid to storing in an oxygen-free environment.