There are different types of ophiolites in terms of geochemistry. Basically, the basalts from ophiolites can be grouped into two types, the islandarc tholeiites (IA T) and midocean ridge basalts (MORB). Most of these basalts, for example, NMORB a nd IAT, are LREEdepleted. EMORBs are mixtures of NMORBs and ocean island b asal ts (OIB), and are LREEenriched. The impact of metamorphism and waterrock int er action on the geochemistry of ophiolites are discussed in this paper. The author s point out that a breakthrough in the way of study is most important at prese nt, because the geochemistry of metamorphic ophiolites usually has multiple ex planations.