Abstract: This paper mainly deals with dissolved solid quantity of China’s rivers on the basis of the observed data collected from thirty rivers.Average annual dissolved solid of China’s rivers empting into the sea totals 345×10⁸ tons,estimated by following formula: where,D =monthly average total dissolved solid quantity in water (mg/l); Q = monthly average river discharge (m³/s); T=seconds for each month.The amount of main ions transported into the sea annually by rivers are shown in Table 1. The dissolved solid quantity of various regions and monthly dissolved solid amount of main rivers in China are given in Tables 2 and 8, respectively.