Abstract： Objective Satellite cells(SCs) transplant was tried to treat myocardium infarction(MI) in human.Methods 10 patients who affected by coronary artery disease(CAD) and MI were selected.A piece of muscle was taken away from their quadriceps femoris 2 weeks before surgical operation.SCs were extracted,purified,cultured by modified Dorfman method,and then transplanted into the MI area by intramyocardial injection after CABG.EKG,UCG,99cTc-SPECT cardiac blood pool imaging,18F-FDG myocardial perfusion imaging were examined before operation and 3 months after operation.The cell metabolism status in the MI area were observed and LVEF were measured and analyzed by paired-samples t test with SPSS13.0 statistics software.Results After cultured in vitro for3 days,SCs were spindleshaped,and sticked to walls.SCs growth was stasis,fused into each other,and formed myotube when the cells were delayed to divide Petri dish or the concentration of fetus bovine serum(FBS) in the culture medium was reduced.Average 2.7 blood vessel bypass were established in these patients.SCs were transplanted merely in one patient whose coronary arteries were extensively sclerosed.No patients died in hospital.Heart function of these patients were recovered to NYHA I 3 months after operation.Their symptoms of angina pectoris were disap peared and quality of life was improved obviously.The cell metabolism activity was appeared again in the MI area 3 months after operatio(including the patient without CABG).LVEF were increased(9.70±4.17)% than preoperation.There is significant deviation between them(P<0.01).Conclusions Autograft of SCs can be alive in the MI area,and SCs can improve the heart function by participating the heart's systole and diastole activity directly or by altering cardiac compliance and stimulating the blood capillary proliferation.