Abstract: The hydrothermal deposits of gold in North China Platform are commonly associated with granites and metamorphic rocks or strata in the greenstone belts, which are thought to be the source of gold by many geologists. Their hypotheses are founded on the higher abundance levels of gold in these rocks or strata celled as source rocks end source beds to support their theories that the gold was derived from these granites or strata to form deposits. Owing to the improvement of quantitative measuring method, many analytical data for gold with reasonable accuracy (0.1×10-9)accumulated. It shows that the gold abundance in the metamorphic rocks or strata is rather low, (1.06～ 2.3× 10-9 in average), and in the relevant granites is only 0.6～ 1.4×10-9 in average. The gold content decreases with increasing granitization and migmatization or amount of fe1sic minerals. This shows that the source rocks or source beds are ambiguous and nonspecific. The granite-formation end alkali-metasomatism are the main mechenism for mobilization of gold which leads to formation of gold deposits.