Due to threats to the survival of primates, conservation initiative ensuring their protection in fragmented and unprotected forest habitats is critically important. Forest areas that are not considered as protected areas are being exploited by people, and are threatening the survival of primates. The result of this study might have implication in strengthening the importance of maintaining primate populations for forest conservation. And conserving the forest, which are primate habitats, is important not only for the survival of primates but also for humans, who utilizes forest resources to live. Sokakembang forest in Central Java Province, is one of the remnants forest within eastern most range distribution of Javan gibbon (Hylobates moloch) (IUCN redlist 2008 listed as endemic, Endangered species), that's heading to vanish due to forest resource exploitation among human habitat use. One of the fragmented-unprotected remnant forest in Java that still occupied by all of Javan endemic primates (such as Javan gibbon, Javan grizzled leaf monkey, Javan langur and Javan slow lories), however scientific assessment and conservation awareness activities are least concerned. Goal of the project is to conserve Javan gibbon in Central Java, Indonesia, through providing recent their recent status on population distribution and threats, so as to establish baseline information about this population. Specific objectives are : 1.To asses population and distribution of Javan gibbon in the fragmented forest of Central Java Indonesia. 2. To examine the effect of habitat disturbance to the abundance Javan gibbon, in the fragmented forest of Central Java. 3. To promote Javan gibbon conservation towards among school students in the habitat of Java gibbon.