Abstract: Solar photovoltaic power generation is a new strategic industry being developed vigorously by the countries of the world.Although Chinese output of solar module ranked first in the world at present，many high value-added solar cell materials，such as silver paste for silicon solar cell，were long-term dependence on imports.The ultra-fine silver powder is a key part of silver paste for silicon solar cell.There have been a lot of published papers and patent applications about silver paste and silver powder for silicon solar cell in China，but few cases related to industrialization development.The quality requirements，preparation methods，and key techniques of ultra-fine silver powder utilized in silicon solar cell′s electrode paste were introduced respectively.The research progress of reducer，dispersant，and morphology controlling methods in preparing of ultra-fine silver powder by chemical reduction was reviewed，and the problems and improving directions were also presented to broaden research ideas of developers.

Key words: solar cell, silver powder, reducer, dispersant, morphology controlling