Forest destruction in Sumbawa is caused by Illegal Logging activities. Illegal Logging in Sumbawa has been triggered by several factors including the problem of community forest utilization, administrative problems in terms of logging permission, timber businessmen with retailer permission and violating timber hoarding activities. The formulated research question in this study is how to solve the conflict of illegal logging based on local wisdom in Sumbawa forest? This study is a non-doctrinal approach with qualitative research design by using legal sociology approach. This study revealed that to solve illegal logging in Sumbawa, it did not only rest on state law but there are also local wisdom values ??that need to be developed and utilized. The local wisdom of the Sumbawa community, namely Pati Ongong has been able to protect Sumbawa forests from the practice of illegal logging. There are rules and traditional rituals that must be conducted and accomplished by the Sumbawa people if they want to cut wood in the forest.