Green space beside has an ecological function also stabilize the psychology people and provides coolness, comfort, and peace because it has a high oxygen content and good humidity. Seeing the scenery, lush plants, soothing aromas, splashing water, and a high oxygen content have a positive effect on human mental health. Therefore, the use of natural forests for eco-therapy healing is urgently needed at this time. This study aims to identify the potential of the TWA Gunung Kelam area as a basis for preparing designs for the development of ecotherapy healing forest in West Kalimantan, based on with the criteria of vegetation index density (NDVI), microclimate, noise level, wind speed, and also the negative ion content of each site used for eco-therapy. Normalized Difference Vegetation Index (NDVI) plays a very important role in this research, will affect the level of comfort and response to human health and microclimate. The research method involving 6 sites and 89 populations with 44 samples students at kapuas university with stratified random sampling. The cycle was carried out 5 times, by measuring health before and after attending therapy. The results obtained from measurements for each site are NDVI, temperature, temperature humidity index, noise level, wind speed, and negative ion content which are included in the comfortable and good for health category, only the air humidity value is quite high Based on DASS 42 evaluation, it also showed a decrease in Stress values after participating in treatment. Based on analyses, Gunung Kelam TWA could developed as a location for eco-therapy healing forests, by utilizing the forest environment which has abundant natural resources.