Since the Tropical Rainfall Measuring Mission (TRMM) satellite was launched in November 1997, TRMM rain products have been evolved from its initial version 4 to soon-to-be version 6. Four different rain products for February 1998 and January 2001 - April 2002 from TRMM Microwave Imager (TMI), Precipitation Radar (PR) and combined TMI/PR rain retrieval algorithms have been analyzed. We first demonstrate that the new version rain products have been improved systematically against previous versions. Then, convective/stratiform rainfall from the new datasets is investigated for their temporal-spatial distributions. Characteristics of intraseasonal and interannual variations of convective/stratiform rainfall will be discussed. Differences of convective/stratiform rainfall from different algorithms are further investigated in order to explain their discrepancies.