Abstract: Humidity plays a vital role in the industrial spheres where there is an imminent needs to control the humidity to appraise the product quality. Among the industries are pulp and paper, sugar, textiles, pharma, air conditioner, food processing and formation of photonic band gap films. Essentially control of humidity in the above areas in the associated manufacturing industries attracts the researchers in recent days to develop latest techniques to implement control techniques effectively. Use of effective methods and to promote scopes for research oriented program for further developments in the field of computer based control of humidity to archive the goal of product quality. This is an honest attempt to review some papers published in various international journals which address the critical influences of humidity and its control strategy. To that account a brief survey on the papers titled on humidity control in various journals is also done.