A health guidance support system for examinee's health improvement including a health checkup data storage for examinees' data containing levels of health conditions or development of diseases and related risk data collected at a certain time interval, an input unit for a health level and risk data in the present user's condition and a future target level, an extraction unit to extract checkup data satisfying the health level and risk data in the user's present condition at a preceding time point as a first data group and checkup data contained therein and satisfying a target health level at a subsequent time point as a second data group, a computing unit to compute an attainment level of the target health level corresponding to a combination of the risk data at the subsequent time point based on both data groups, and a display unit for the combination and attainment level is provided.