Military doctors are both soldiers defending the country and medical workers practice humanitarianism. The war situation has not only brought up the unique medical practice of military doctors in the filed，but also brought many ethical problems and moral perplexities to them，such as the selection of battlefield medical treatment，how to treat war prisoners，battlefield euthanasia and so on. These factors challenge the professional ethics of military doctors and are the source of moral injury. In this regard，we should fully respect the value of life，affirm military doctors the value of life actors challenge the professional，and shape strong moral resilience，and subsequently reducing the occurrence of moral injury.