Abstract: In this research the palatability of four tropical forage cultivars, Pennisetum×P.americanum cv.Reyan No.4、Stylosanthes guianensis cv.Reyan No.2、Paspalum atratum、Panicum maximum jacq.cv.Reyan No.8, were measured with the index of intake speed and quality via house feeding Hainan Yellow cattle during the vegetative growth. The results indicated: 1 for the intake speed Pennisetum×P.americanum was the highest, there was no significant difference between that of Paspalum atratum and Stylosanthes guianensis, Stylosanthes guianensis and Panicum maximum jacq, but that of Panicum maximum jacq was significantly lower than that of Stylosanthes guianensis; 2 for the intake quality the orders was Pennisetum×P.americanum＞Paspalum atratum＞Stylosanthes guianensis＞Panicum maximum jacq. Based on the above results the palatability of the four cultivars was also be ordered as Pennisetum×P.americanum＞Paspalum atratum＞Stylosanthes guianensis＞Panicum maximum jacq.Suggest when house feeding ,with 64% Pennisetum×P.americanum cv.,16% Stylosanthes guianensis cv.,15% Paspalum atratum and 5% Panicum maximum jacq’s is a reasonable recipe construction.