Tetanus toxoid (TT) immunization is the process of building immunity as an effort to prevent tetanus infection. The coverage of TT immunization at the Kassi-Kassi Health Center is still low. In 2017, out of 1869 pregnant women, the coverage of TT1 immunization was 1516 (81%), and for TT2 coverage was 757 (41%). The achievement of tetanus toxoid immunization coverage can be influenced by several factors, including sources of information and knowledge about TT immunization. The purpose of this study is to determine the relationship between the source and the completeness of Tetanus Toxoid immunization of Mrs. Primigravida at the Kassi-Kassi Health Center in Makassar City. This type of research is an Analytical Survey with a cross-sectional design. The sample in this study is all primigravida mothers with a gestational age of more than 32 weeks and primigravida mothers who have received TT1 and TT2 immunization at the Kassi-Kassi Health Center totaling 35 people. Data analysis uses the Chi-Square test with a confidence level of 95% (?=0.05). The results of the study showed that there was a meaningful relationship between information sources and the Immunization Completeness of Ibu Pimigavida (p=0.020) at the Kassi-Kassi Health Center in Makassar City. Puskesmas is expected to improve promotive and preventive functions to be able to increase public knowledge about TT immunization so that it can increase the coverage of TT immunization.