The growth kinetics of ethylene hydrate was studied by measuring the hydrate film growth rate on the surface of a suspended ethylene bubble in water at temperatures from 274.1 K to 280.1 K over a pressure range of 0.80—4.38 MPa. The dimensionless molar Gibbs free energy difference was used as the driving force to correlate the experimental data. The apparent activation energy of 61.23 kJ·mol-1 and the pre-exponential factor of 6.76×1011 mm2·s-1 were determined by regression of experimental data.The influence of pressure upon the film growth rate of ethylene hydrate at different temperatures was also investigated.