The amount of water vapor in the air is called humidity. Humidity in the air varies according to regional climatic conditions. The ideal ambient humidity for human health is between 30 and 50 . The aim in this study, by keeping the humidity in the air at desired values, was to create the ideal ambient humidity for the sick people where the moisture amount is important and to increase the work efficiency in the facilities such as medicine, confectionery, food and oil where the humidity level is important. Some people with respiratory disease should take their medications directly into their lungs. In this system which the nebulizer feature added, the liquid medicines called nebul for the people with respiratory diseases such as asthma and COPD, were provided to reach directly to their lungs, by evaporating with cold steam method. Through the ambient humidity stabilizer with nebulizer and dehumidifier, the humidity in the environment was decreased and at the same time the medicine called nebul was vaporized and given to the patient. In the realized system, a user interface was created and provided the user to use the Ambient Humidity Stabilizer with Nebulizer and Dehumidifier Device in the desired mode with buttons in created interface. Abd¼lkadir ‡akir | Mehmet Ali Binici | Mehmet Karakaya "Ambient Humidity Stabilizer with Nebulizer and Dehumidifier" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29472.pdf