Abstract: The placer gold deposits of the "golden triangle" area are distributed mainly in the following positions:1) near the Mianxian-Pingwu deep-large fault zone;2) the intersection of NW-trending subsidiary fractural zone and the major deep-large fault zone;3) the transforming position of northwestern low-to-middle mountainous area to southeastern hills;4) the lower parts of the intersection of main stream and branches; and 5)the drainage near the developed area of quartz veins.The metallogenic model is as follow:high gold-containing geologic body→reformed by ectodynamic process, gold separated from its parent and occurred as fine grained gold partly transferred from micrograined to fine-grained→deposited in drainage→reformed and migrated to the present position, and formed placer gold deposit with certain scale at last.