[ Objective ]To explore the characteristics of cardiac function of female college students through the interventionof eight weeks of head down tilt strong abdlominal breathing training, and to provide theoretical and practical basis for relat-ed tests, experiments and training.[ Methods ] A total of 23 female college students from the sports rehabilitationclasses in the school of physical education were randomly divided into the Experimental Group and the ControlGroup,of which 12 were in the experimental group and 1l in the control group.The subjects in the experimentalgroup were trained with head down tilt abdlominal breathing for 30 minutes ,3 times a week for eight weeks ,and thefrequency of breathing was 35 times/min.The subjects in the control group were only required to go on with normalliving and learning.The Ejection Fraction(EF) , Ejection Distance( ED ) , Systolic Blood Pressure( SBP ) , DiastolicBlood Pressure( DBP ) , Stroke Volume(SV) and Ascending Aortic Velocity ( AAV) of subjects in upright , supineand handstand positions were measured before and after the experiment through the literature method ,experimentalmethod and mathematical statistics to carry out relevant analysis and research.[ Results]( 1)After 8 weeks of train-ing, the promotion effect of the Experimental Group's cardliac function was very obvious , with all the indexes obvi-ously superior to those of the control group.There were significant differences of EF in the Upright Position ( P=0.013 ) , in the Supine position(P=0.000 ) , and in the handstand position(P=0.000 ) .There were significant differ-ences in SV in the upright position(P=0.012) , in the Supine position( P=0.006) , and in the handstand position( P=0.001 ).There was a significant difference of AAV between the two groups(P=0.045) .(2) ED of female studentsin pretest Group and post-test Group was the largest in handstand position ,followed by supine position and the thenin upright position.SBP and DBP of female students in pretest Group and post-test Group were the largest in uprightposition , the SV and AAV of female college students in pretest Group and post-test group were the largest in supineposition, the second in handstand and the smallest in upright position.[ Conclusion]8 weeks head down tilt strongabdominal breathing training can improve the heart function of female college students , so the head down tilt strongabdominal breathing training can be an effective way to improve the cardiac function of female college students.