In the special project have the objective to study electrical and gas sensor properties of TiO2 prepared from microwave assisted. The analysis of characterized by Scanning Electron Microscope (SEM), X-ray diffraction (XRD). The results of the study of electrical properties show that sample 10 there is least resistance is equal to 250 kilo-ohm and sample 8 has a high resistance is equal to 3,333 kilo-ohm. And properties in response to a gas at room temperature.