Abstract: By summarizing and analysing the results of experiments and thermodynamic calculations, the control factor of hydrothermal paragenesis and enrichment fOr PGE and gold was preliminarily studied, including the similarities of transport fOrm of complexes and physico-chemical conditions of precipitation. In addition, the fOr mation of solid solutions between PGE and gold, the relative solubility, the characteristic of source region, the nature and active history of hydrothermal solution also have important influence upon it.