The pregnant woman offers a favorable environment for germs that fight her ability to fight infection, which justifies the increased susceptibility of the pregnant woman to many infectious diseases. CRP has very rapid evolution kinetics during an infectious inflammatory syndrome; its investigation allows early diagnosis of an infectious syndrome, which potentiates the diagnostic value of its assay. The overall objective of this study was to search for the protein; reactive in pregnant women at the Kangu General Reference Hospital. During our study we found that according to the distribution of the results of the CRP of pregnant women that out of 74 samples in total, 46 were positive or 62.16% and 28 negative or 37.84%. The distribution of CRP results according to age groups revealed that the age group of 16 to 25 years old had a CRP positivity rate of 32.43% and that of 36 to 45 years old with 5. 41% out of a total of 74 samples, the two age groups presented being respectively the most affected and the least affected. The distribution of CRP results according to the age of pregnancy indicated that the 2nd trimester of pregnancy presented a positivity rate of 37.84% with 28 cases; and moreover, the 3rd trimester with 10.81% or 8 out of the total of 74. The said age groups being the most infected and the least infected.