Abstract: Based on document analysis, the contribution of physicist JIANG Ren-shou to the viscousity of the liquid metal and surface tension is discussed. It is concluded that he worked on the viscosity of the liquid since the 1830s began, improved the Helmholtz double suspension spinning ball design method, used the improved suspension wire rod inertia ball experimental device to measure the viscosity of water, liquid alkali metals sodium, potassium viscosity and viscosity of sodium-potassium alloy. The measured accurate data was internationally recognized and was a long-term follow. JIANG Ren-shou expanded the scope of the study to the surface tension of the liquid metal, he has made important contributions to the development of the modern fluid physics in China.

Key words: JIANG Ren-shou, hydrodynamics, metallic liquid viscosity, surface tension