Line 1 of the Chengdu Metro (Chinese: 成都地铁1号线; pinyin: Chéngdū Dìtiě Yī Hào Xiàn) is the first line to enter revenue service on the metro network in Chengdu, Sichuan, China.

The line started construction in 2005,[2] and entered service on September 27, 2010.

Line 1 is a crosstown north-south trunk route, stretching from Weijianian in the north of town to Science City in southern Chengdu.

Between Chengdu South Railway Station and Western China International Expo City Station, the line runs adjacent to Line 18 essentially forming a four track subway.

However this plan is stalled due to military zone in the affected area.