The first and second phase of Chengdu Metro Line 6 is the longest underground rail transit line built in Chengdu at one time, and also the backbone line running through Chengdu in the north-south direction. The total length of the line is 47.4 km, with a total of 141.5 km of track laying. All of them are underground lines, with 38 stations, 1 car depot and 1 parking lot ‌. This line starts from 郫 District in the north, stops at Gaoxin South District in the south, and connects with the third phase of Line 6 Project at Guandong Station. Along the line, it passes through Gaoxin West District, Jinniu District, Chenghua District and Jinjiang District, connecting a number of important districts, such as OCT District, First Ring Core District and Sanguantang District.