Through matching Chinese General Social Survey to the provincial foreign trade data, this paper measures the degree of openness of high-tech industry based on the absolute value and proportion of mechanical and electrical products exports and high-tech exports. The theoretical analysis shows that openness of high-tech industry will promote female wage growth by means of uplifting the screening threshold in exporting enterprises and raising the opportunity cost of giving up professional work for women. Empirical studies verify the conclusion of theoretical analysis and further point out that the beneficial effect of openness of high-tech industry is most significant for women in lower wage bracket, thus serving to promote the social equality in female wage. However, when compared with the growth promoting effects of high-tech industry openness on male wages, the effects on each quantile of male wage show no significant difference from those on female wage. Therefore, the openness of high-tech industry is still not powerful enough to narrow the wage gap between genders although it is a must for enhancing export quality.