Longgang District is located in the geometric center of Shenzhen metropolitan area. It is the only urban area in Shenzhen bordering Dongguan and Huizhou. It is also the “bridgehead” of Shenzhen radiating East and North Guangdong. It is fully qualified to become a “test field” for exploring the construction of Shenzhen metropolitan area. This report introduces the significance of Longgang in promoting the planning and construction of Shenzhen metropolitan area，and comprehensively analyzes its advantageous conditions such as geographical location，economic foundation and people to people and cultural exchanges，As well as challenges in regional platform level，regional cooperation and regional transportation integration，On this basis，it put forward countermeasures and suggestions to promote the eastward movement of Shenzhen metropolitan area，form a science and technology industry development axis，create several cross regional cooperation platforms，plan a Shenzhen Hong Kong Science and technology industry cooperation zone，and make good use of policy innovation，In this way，Longgang will strengthen its leading role and radiation driving force in eastern Guangdong，and strive for a valuable strategic hinterland for the future development of Shenzhen.