he study on the community structure of bamboo was done at sub districtSrumbung Magelang Central Java Province. This study has been held on October2010. Fourty plots have been made at sub district Srumbung. The research was doneby using purposive sampling technique. From this study, it is shown that were 51species of bamboo and non bamboo. There are 10 species of bamboo found in theseplots. The highest frequency of bamboo Gigantochloa apus (0,5). The highestdensity is also Gigantochloa apus (2567,5 culm/ha) but Dendrocalamus asper (137,5clump/ha). The highest density based on clump/ha is Gigantochloa apus (0,320culm/ha) and Dendrocalamus asper (0,222 clump/ha). When the important value wascalculated for clump/ha. The highest dominance is Gigantochloa apus (0,019culm/ha), and Dendrocalamus asper (0,016 clump/ha). When the dominancy wascalculated based on clump/ha. The diversity index showed a low diversity whencalculated for culm/ha. The dispersal of bamboo culm and clump is colony andaggregate. The highest culm diameter is Dendrocalamus asper. The highest clumpdiameter is Gigantochloa atter.