Abstract: Volcanism has great significance not only for the formation of Fe and Cu-polymetallic deposits, but also for gold mineralization. The authors have deeply realized the great significance of volcanism in the formation of gold deposits through many years of work in areas of volcanic rocks and arrangement and analysis of geological data of large and superlarge gold deposits at home and abroad. This paper elucidates this understanding from the genetic types of gold deposits and their sizes and reserves and analyses of geological conditions of various types of gold deposits and preliminarily summarizes the problems meriting attention and indicators in gold prospecting with an attempt to improve gold prospecting in volcanic areas. The paper focuses on the internal relation between submarine volcanism and formation of gold deposits, while gold deposits related to terrestrial volcanism are scarcely discussed because they are more directly perceived.