Abstract: Following the work reported in paper I, the hydrodynamics of the liquid-solid circulating fluidized bed were studied further. The experimental results of the apparent slip velocity between liquid and solid show that there is a great difference between the experimental results and the theoretical calculated values based on the generalized fluidization relationships. The experimental results of the apparent relative drag coefficients also show that there is a large difference between the theoretical and experimental results. It seems conclusion can be drawn that it is difficult to predict the hydrodynamics of the liquid - solid circulating fluidized bed by using the generalized fluidization relations.