To clarify the hygrothermal environment of vertical edge insulation methods in moderate and humid climate region, especially in the summer involving the rainy season, temperature and relative humility of 12 houses have been measured. From the measurement results, the temperature variation in the crawl space tends to slide slightly backward compare to the outdoor air. Evaporation from the drying concrete keeps the humidity in the crawl space rather high, especially in the summer just after completion. But it becomes moderate on condition that it passes through the winter. Daily diurnal range of temperature in the crawl space is smaller, and absolute humidity is lower, than the other construction method, that also ensures against condensation proofing.