Abstract: ObjectiveTo analysis the loss of blood donors, find out the reasons backward and to provide a basis for the development of recruiting strategies for this population. MethodsAn investigation was carried out on those who did not participate in blood donation in the past two years, which using the blood information management system for selection and excluded those who failed the infective diseases detection tests. Then the return visit by phones was conducted among who have participated in non-remunerated blood donation while have been quitted for merely 2 years. ResultIn a total of 3611 people who have been quitted from non-remunerated blood donation, 2918 were successfully interviewed. Among the reasons they gave, the top three were as follows: 37.11% reported inconvenience because of time and traffic, 26.29% reported to have forgotten to donate blood, 12.61% reported to have blood donation reactions in the past. In the investigation of who hold the willingness to donate blood again, students, soldiers and free professionals accounted for 69.54%, 71.05% and 50.57% respectively. Considering education levels, people with at least university degree or junior middle school education and below are 71.49% and 60.42%. Considering age, the 18-30 and 31-40 age groups comprised 68.47% and 62.17%. ConclusionTo reduce the loss of blood donors in Tianjin, our blood collection should focus on the donors under 40 years old and the free professionals with low education.

Key words: Loss, of, blood, donors, Investigation, Return, blood, donation