The pantograph catenary performance of Beijing metro line 14 was analyzed and studied. Pantograph catenary working principle of the measurement system was introduced, and combined with the test data, the distribution of contact force, contact force’s the most value, pantograph head vibration acceleration, pantograph and catenary arc phenomenon, the height of the catenary anchor point and the pulling value test results were analyzed respectively. Research showed that: when the train was in accelerating section and through the anchor segment joints, line bifurcation, section insulator and soft transition area, vibration acceleration of pantograph head turned great, and contact pressure and the pantograph head vibration acceleration of local line had mutation phenomenon.