Abstarct: Droplet formation from end of nuzzle and its motion in periphery environment, is considered as an attractive and useful subject that turned attentions of many researchers. Better understanding of drops physics and affecting factors on formation, separation and motion of the drop result in improvement of related industrial process efficiency. Accordingly, this study investigates on the deformation and drag coefficient of two viscoelastic (Boger) droplet with different elastic properties, falling in the air and kerosene. These results have been compared with three Newtonian fluids consisting of water, ethanol and solution of sodium dodecyl benzene sulfanates salt in water as a surfactant. The results are obtained from image processing of droplet falling imaging. The results of droplet cinematic investigation showed that drops fall with constant and less acceleration than gravitational acceleration and because of low air viscosity, they haven’t reached their terminal velocity, but in droplet falling into the kerosene, due to increase of fluid bulk viscosity, the amount of acceleration reduced considerably. The path of the drops is the next issue that is examined. The path of the falling droplets in the air because of the low viscosity of air is quite a straight line but the path of falling droplets in kerosene is swinging due to creating Karman vortices. At low Reynolds numbers, two symmetric vortices, which are formed on both sides of the drop, cause the drop to continue its movement straightly while with increasing Reynolds number, the growth of vortices is asymmetric and the path of the drop comes just swinging. The volume of drops is calculated by integration of drops small elements around its symmetry axis with assumption of axisymmetric condition. It is compared with theatrical result and showed a suitable agreement. The drops drag coefficient is also examined. Droplet deformation and its effects, makes it difficult to find relationships to describe the drags coefficient. Therefore, two different views were used. First, by ignoring the drop deformations while its move and assuming it as a rigid particle, baxsed on Newton's second-law theory to describe the relationship between the drag coefficients baxsed on the Reynolds number. In the second view, baxsed on image processing methods, deformations were used to calculate the drag coefficient quite accurately. The results showed that the presented formulas has an acceptable accuracy, it should be noted that the Newtonian droplets have a more deformation comparing to the viscoelastic droplets, results in rising error values. The effects of viscosity, elastic properties and surface tension on the drag coefficient were considered, and results showed that by increasing the viscosity ratio (k) values of drag coefficient increases. For drops with the same viscosity ratio by increasing the elasticity number (En) and increasing the amount of surface tension, drag coefficient increases. The present study also investigates on the drop deformation. Newtonian droplet deformation during their fall in the air is periodical and it is because of interaction between surface tension forces and hydrodynamic pressure and internal circulation currents, leads to instability in the droplets. Whereas, periodical deformation of droplets, while moving in the kerosene gradually damped. This is because of higher kerosene viscosity compared to the air. However, in the case of viscoelastic droplets, it can be said that by adding more polymers, the oscillations will be damped. Also, the results showed that higher concentrations of polymers would lead to less oscillations during the motion drops. In addition, polymer additives causes irregularities in the behavior of the droplets. In other words, the periodic patterns like those were seen on Newtonian droplets, is not observed. On the other hand, the range of volatility for viscoelastic droplets is remarkably less than Newtonian droplets while viscoelastic droplets deform more in kerosene, losing their spherical shape and are changed into oval shape.