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Sanjiazi deposit is a skarn scheelite mineral deposit newly found in Northeast China�� The dikes developed well in mining area��in which the diorite-porphyrite dike controlled the outcrop of tungsten ore body in space with close relation to tungsten mineralization��which is one of the important indicators for tungsten prospecting in this area�� The diorite-porphyrite generated prior to scheelite mineralization�� Compared with the trace elements and REE of the dike��granite body and scheelite ore��the conclusion can be drawn that the diorite-porphyrite has similarity with granite body and scheelite ore in main trace elements contents and comparability in REE contents�� and belongs to homologous relationship in origin��