This research has a background by definite of banking corporate using good corporate governance in West Sumatera. It is caused by banking manajemen run a ethics business and corporate culture of banking corporate in West Sumatera less. The research aims to know effect of ethics business and corporate culture to implementation of good corporate governance on central board of Bank Nagari by partialy and simultanously . Based on result of analyze data got (1) ethics business have positive and significan influence to implementation good corporate governance on central board of Bank Nagari with coefficien regression as many as 0,405. (2) corporate culture have positive and significan influence to implementation good corporate governance on central board of Bank Nagari with coefficien regression as many as 0,405. (3) ethics business and corporate culture have positive and significan influence simultanously to implementation good corporate governance on central board of Bank Nagari with Fcalculate = 79,717. 70,2% implementation good corporate governance on central board of Bank Nagari are influenced ethics business and corporate culture