Sinking matter is a carrier of chemical elements in the sea for transfering. The paper is the result of the study on the sinking matter, which was collected with the sediment traps in the 15m and 68m depth water layers in the East China Sea at32°00′N,126°00′E, in May and July, 1990. The grade distribution of sinking matter and plankton in the whole water column,biological species and number, and contents of chemical elements, were analysed and examined.The results show that the grade distribution and biological species in the sinking matter were similar to that of plankton. The paper describes the spatial and temporal characters. of meral element content in spring and summer, the relationships among the particulate metals and the existence forms of the particulate metals in the sinking matter.