To study effects of Rhodiola Salidrosides A. Bor Gadoloside (RSGS)on immunological function in mice. Mice was immune with RSGS(800 μg/d)by abdominal cavity injection, transformation response of spleen lymphocytes and cytotoxicity of (PEMφ) were detected by MTT. RSGS played mitogen-like effect and the effect showed dose depandent in vitro( P <0.01);Transformation response of spleen lymphocytes have not more enhancement in immune mice of RSGS in vivo, and the cytotoxicity of PEMφ of RSGS immune mice again...