1. In the 1960s and 1970s, China's medical and health level was relatively low, medical resources and equipment were extremely scarce, and medical equipment was insufficient. Infusion was advanced equipment and technology, which was difficult for general medical institutions to bear.
2. At that time, medical knowledge was relatively backward, and the training and technical level of doctors and nurses were not high enough, so it was impossible to complete difficult operations such as infusion, which also led to the situation that infusion was difficult to implement.
3. At that time, the use method and safety standard of infusion technology were not fully mastered. In order to avoid complications caused by infusion, such as infection and vascular injury, some hospitals and doctors choose not to use infusion to avoid bringing more serious problems to patients.