The influence of temperature and relative humidity on moisture content of corrugated paper and moisture content on elastic modulus of corrugated paper were studied by experiments. The three-dimensional image among moisture content, temperature, and relative humidity was constructed. The results showed that the moisture content of corrugated paper decreases with increase of temperature and increases with increase of relative humidity; the effect of relative humidity on the moisture content of corrugate paper is greater than temperature; the elastic modulus decreases with increase of moisture content.