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Background Forest fires in the slope of Mount Merapi has occurred in 1994, 2002 and 2010. Forest fire has direct effect on soil collembolan. Aim of the Study. This study to investigated of distribution and abundance of soil arthropod after forest fire in Mt. Merapi National Park. The study area was conducted in 1 year-old forest : severe burnt forest (Kis), medium burnt forest (Gam), light burnt forest (Gal); 9 years-old forest (Tub) and (Tub i) that invated of Eupatorium odoratum; 17 years-old forest (KuHt) and unburnt forest. Method Soil samples were collected by Stratified Random Sampling method. The study was conducted in dry and wet season. Result. The highest number of genus in wet season was found in 9 years-old forest (Tub) and in the dry season was found medium burnt forest (Gam). It was 11 and 7 genera respectively. The number of family increase in the wet season in 9, 17 years-old forest and unburned forests, it was namely 5, 4 and 5 families respectively. The dominant family was Onychiuridae, followed by Entomobryidae and Isotomidae. Vegetation growth and stability of habitat conditions were factors that determined the development of soil collembola community. Soil moisture and immigration during the wet season affected on the presence of family, genus and individual of the soil collembola community.