In order to detect the prevalence of Chikungunya virus in the province of Hanoi, 1023 Ae.aegypti and 885 Ae.albopictus captured from six districts of Hanoi with 200 hemorrhagic fever patients at 103 and Bach Mai Hospitals were used in the study. Results showed that the prevalence CHIKV on both mosquito is 0 percent, while the rate of RNA material detection of CHIKV in hemorrhagic fever patients in 103 and Bach Mai Hospitals is 8 percent and 0 percent, respectively. Detection rate shows that, in addition to DENV is a major cause of hemorrhage also CHIKV cause similar diseases in the area of Hanoi.