Objective To analyze the effect of the “Birthday Blood Donation Medal” (hereinafter referred to as the Birthday Medal) personalized souvenir to the blood donor recruitment and retention effect of blood donors in Guangzhou Blood Center. Methods From 2017 to 2019, there were a total of 11 790 blood donors donated blood on their birthday in Guangzhou Blood Center. Aline chart was drawn of the number of blood donors who donated blood on birthday to observe the trends every half a year from 2017 to 2019; Chi-square test was used to compare the characteristics of blood donors in two groups (before and after the “Birthday Blood Donation Medal” activity) and we analyzed the sensitive population of the activity. Results The number of blood donors on the birthday every half year from 2017 to 2019 continued to increase. Among them, the number of blood donors donated on birthday on July-December 2018 increased by 406% compared to the first six months of 2018, which was the largest increase. The differences in gender, age, occupation, and previous blood donation times between the two groups were statistically significant (P<0.05). After the activity, the percentage of male, 35-year-old and above blood donors, workers/clerks and other occupations, and regular blood donors increased. Conclusion The “Birthday Blood Donation Medal” activity in Guangzhou Blood Center has a significant promotion effect on blood donation on birthday. Among them, males, aged 35 and above, workers/occupations/other occupations and regular blood donors are more sensitive to this activity and are more likely to donate blood on birthday. In the future, other recruitment and retention measures should be taken to pay attention to women, under 25 years old, students and first-time blood donors.