In Japan, there are unique facilities (namely Ningen Dock) for health checkup that provide asymptomatic participants with a health examination, including cancer screening activities, at their own expense. The most advanced examination equipment and examinations do not only provide high accuracy, but they also reduce stress on the body of the client. Usage of the medical equipment and diagnostic techniques allows us for successful detection of many diseases in their early stages of development. This early detection leads to quicker response for the disease. On the other hand, gynecological cancer screening is a relatively simple, low cost, and noninvasive method. In this chapter, we introduce a major role of Ningen Dock in gynecological malignancy prophylaxis. Ningen Dock attendances are associated with extremely low positive gynecology cancer screening incidence (0.03%). The level of knowledge and attitude toward screening may be related to multiple factors such as ethnicity, place of residence, income, and social-economic status. Not paying attention to cancer screening may be the risk factors for non-attendance to health checkup. These findings are of importance for improving the gynecological cancer screening practices of the lower screening attendance in Japan.