The study of bamboo used in testing 5 types. Bamboo, bamboo, bamboo เฮียะ sang Bong รวกดำ bamboo and bamboo sweet by test study the truss with the 3 format. And if the deflection was the lowest.4 formed a affecting deflections was the lowest. The results showed that bamboo to suit the truss with minimum deflection is bamboo sang and points a bolts. Using a Howe truss suitable and deflection was the lowest.