Heart transplantation is an effective method for the treatment of end-stage heart disease. Therefore, this article aimed to establish a stable and effective mouse abdominal heart transplantation model. MiR155 alleviates the acute heart transplantation response by regulating Th1 / Th17 immune cytokines. This paper used the control method of randomly selecting samples to classify 30 healthy mice that met the conditions. First, C57BL / 6 mice were used as recipients, and Balb / c mouse hearts were used as donors to establish mouse hearts as a transplantation acute reaction model. A chronic rejection model of mouse heart transplantation was established by C57BL / 6 mice as recipients and Bm12 mouse hearts as donors. The survival time of the two groups of transplanted hearts was carefully recorded. The results of the study showed that in the heart transplantation acute/chronic rejection model, the average survival time of the donor's heart in the allograft group was (7.5 +/- 0.37) / (63.4 +/- 4.37) days, which was the same compared with the two groups. Therefore, in-depth analysis of the experimental control results and conclusions from the experimental results of the mice, this study can better respond to the pathological changes of acute/chronic rejection and reach the standard of model establishment. MiR155 relieves heart transplantation by regulating Th1 / Th17 immune response acute reaction.