Formaldehyde is considered as the natural organic material with the equation of CH2O (H-CHO) and the simplest form of aldehydes; in respect of the way, Formaldehyde is one the major significant precursors to numerous types of chemical components. The objectives of this comprehensive study is the methanol oxidation and its conversion to formaldehyde have been experimentally investigated. To do this water and methanol are used as two strategic components in chemical industries and, the feed stream is used to produce formaldehyde in a pilot reactor. Subsequently, due to the presence of water and oxygen in the process of methanol oxidation, the conversion factor has a dramatic increase from 50 percent to approximately 75 in the length of catalytic bed.