Abstract: Volumetric mass transfer coefficient of hydrogen in pine gum and rosin which is very necessary to provide the important basic data for studies on reaction kinetics of catalytic hydrogenation of pine gum and rosin have been measured at various pressure (2.0 MPa～10.0 MPa), temperature (373 K～573 K), and 600 r/min stirring speed in a high-pressure agitated autoclave. According to the pressure change during the pure gas dissolution in solvent, volumetric mass transfer coefficients of H2 in pine gum and rosin were calculated. The result shows that volumetric mass transfer coefficient of hydrogen increased with temperature and pressure, and the relationship among them have also been correlated. During the calculation of volumetric mass transfer coefficient, the comparison of the results between integral method and differential method was also made, and the average absolute deviation is 4.74×10－4 for pine gum and 1.21×10－4 for rosin.