Abstract:Four different products of Anwei Tablets have been tested for tegration and dissolution rate in vitro. The results showed that there were striking differences in the three parameters T50, Td and m(P<0.01), in T50 by multiple comparisons (P<0.01) and in disintegration in water and artificial gastric juice (P<0.01) and there were correlations of results between T50 and disintegration(P<0.05).