Diabetes is one of the most rapidly-growing chronic diseases in the world. Acetone, a volatile organic compound in exhaled breath, shows a correlation with blood glucose and has proven to be a biomarker for type-1 diabetes. Measuring the level of acetone in exhaled breath can provide a non-invasive, low risk of infection, low cost, and convenient way to monitor the health condition of diabetics. There has been continuous demand for the improvement of this non-invasive, sensitive sensor system to provide a fast and real-time electronic readout of blood glucose levels. A novel nanostructured K2W7O22 (potassium tungsten oxide) has been recently used to test acetone with concentration from 0 parts-per-million (ppm) to 50 ppm at room temperature. This thesis work involves in designing K2W7O22 sensor with an improved sensitivity and detection limit .For future work, a device has proposed to detect low concentration of acetone for practical use purpose.