: Background and Purpose: Respiratory tract infections are diseases that are common with mild to severe manifestations. Data From Bahu public health centers in 2009 there were 266 patients with respiratory tract infections and ranks first of five major diseases in Bahu public health centers and in 2011 is still the first order of 10 major diseases. This study aimed to determine the pattern of the bacteria that cause respiratory tract infections in Bahu public health centers. Research methods: The study used a prospective descriptive method through sputum culture studies in patients with respiratory tract infections Puskesmas Shoulder period November 2012 - January 2013. Results: From the results of the study found that gram-positive bacteria were more common in comparison with gram negative. Conclusion: The bacteria that cause respiratory tract infections are the most widely found is Streptoccocus sp