Abstract: The effects of cryopreservation and Qi Gong on the ultraweak luminescence from fetal iver cells were studied by a Single Photon Counting technique. The suspension of fetal liver ells were preserved in liquid nigrogen （-196℃） for 5 to 7 days, showing no significant uminosity difference from the fresh suspension of fetal liver cells. Qi Gong greatly increased he photon emission from both fresh and cryopreserved suspension of fetal liver cells. The echanisms of cryopreservation and Qi Gong effects on photon emission of fetal liver cell were iscussed.