When searching for placer gold deposits, it is necessary to study its geological background, ore source, neotectonic movement, transport medium and sedimentary environment in detail, so as to get twice the result with half the effort. The distribution area of placer gold elutriation relics and the current folk mining area are favorable areas for finding placer gold. Placer gold deposits of flowing water origin are characterized by group distribution. If we say alluvial, it means alluvial, alluvial, alluvial, alluvial, alluvial, alluvial, alluvial, alluvial, alluvial, alluvial, alluvial. Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; Alluvial; If alluvial terrace placer gold deposits are found, we should look for flood plain placer gold deposits or riverbed placer gold deposits in this valley. If eluvial alluvial gold deposits are found in high places, we should look for flowing alluvial gold deposits in the corresponding valleys. Placer gold deposits are mostly distributed in 2~3 grade river valleys and their tributaries in hilly landform areas with shallow cutting. Placer gold deposits are mainly distributed in the 1~2 valley in the deep part of the mountain and mountain landform area. Therefore, attention should be paid to these river sections. In areas where neotectonic movement frequently rises, attention should be paid to finding terrace placer gold, and in areas where neotectonic movement is stable, attention should be paid to finding flood plain placer gold or riverbed placer gold. When arranging exploration projects, we should pay attention to observing the landform of the river valley, and we must put the project in a powerful landform part to receive the expected prospecting effect. Different genetic types of placer gold deposits have different landforms. Attention should be paid to searching for placer gold in concentrated areas of rock gold mineralization or areas with high background value. Attention should be paid to finding placer gold in geophysical and geochemical anomaly areas of gold or associated elements, especially in areas with gold and heavy sand anomalies. In the placer gold distribution area, if tertiary glutenite develops, it should be found out whether there is tertiary placer gold. In the evaluation area, if placer gold has been found, it cannot be used because of its low grade. We need to find out the cause of this kind of parts, and see if there is a problem with drilling technology (unqualified sampling or poor elutriation) or improper hole location. If so, make up the difference to avoid the serious consequences of ore loss and leakage. In modern over-exploited areas (especially permafrost areas), due to the low recovery rate in some areas, some placer gold still remains in tailings, and its re-evaluation also has certain prospecting significance.