The Lake is located in the northeast of Eryuan County, Dali, Yunnan province, about 3 kilometers away from Eryuan County, 73 kilometers to the north of Dali, and 58 kilometers to the south of Shibao Mountain Scenic Area in Jianchuan. Supported by mountains in the east and north, connected by fields in the southwest and long and narrow in the north and south, it is a natural fresh water lake formed in the karst depression of the plateau. It is one of the main lakes in the upper reaches of Erhai Lake and also the source of Erhai Lake.
Yunnan Province in southwest China border, the provincial capital Kunming. Warring States period, this is the Dian tribe fowl. Yunnan, namely, "Caiyunzhinan"and the other argument is that because in the "Yunling of the South " is named. The total area of about 39 million square kilometers, accounting for 4.11% of total land area, the provincial administrative regions in the country ranked No. 8 in the area. The total population of 45,130,000 (2008), accounting for 3.36% of the population, the population ranked 13th. And Yunnan provinces adjacent to Sichuan, Guizhou, Guangxi, Tibet, Yunnan Province, three neighboring countries of Myanmar, Laos and Vietnam. Tropic of Cancer crosses from the southern province.