The history of viscosity measurement is outdated and it is believed that the viscosity of motor oils was measured when the car industry came about[1]. A rotating viscometer for measuring viscosity at various temperatures is one which may be used. The CCTRV was designed, constructed and compared to the existing one to obtain more accurate viscosity information from any liquid in this treatise. The microfluidic device offers a range of features, such as simple to use, portable, operational transparency and a quick and marginal reaction volume detection. This review discussed the development and application of various microfluidic viscometers, mainly for biomedical uses. The state-of-the-art approach is used to manufacture microviscometers for point of care diagnosis on a commercial scale. This review summarizes the limits of the presented conventional viscometers and value chain, including designs, manufacturing techniques and other related methods. It has been found that microfluidic viscometers have unbelievable uses for controlled and selective regular monitoring and personalized point of care devices.