People may value possessions, in part, because ownership of goods promotes feelings of security. If so, women with low security should be inclined to choose men with good material condition as their mates. We test this prediction in two studies. Study 1 aims to explore the relationship between women’s security and their material preference in mate-choosing. Study 2 aims to test whether reducing women’s security would increase their material preference in mate-choosing. We took unmarried working women from Beijing, Shanghai and Guangzhou as participants in both studies. In study 1, we developed a scenario-based questionnaire to measure women’s preference in mate-choosing first. There’re three personal ads in the questionnaire, each shows a man’s photo and text describing the man’s character condition, outer condition and material condition. The three men are equivalent on the whole, without significant difference in average score of the three conditions (F(2, 162)=.06, ns) or in age (F(2, 162)=.13, ns). But the first man’s character condition is outstanding while the other two men’s are ordinary (F(2, 162)=69.38, p<.001), the second man’s outer condition is outstanding while the other two men’s are ordinary (F(2, 162)=80.13, p<.001), the third man’s material condition is outstanding while the other two men’s are ordinary (F(2, 162)=87.84, p<.001). We assume that women who choose the first man prefer character condition, women who choose the second man prefer outer condition, and women who choose the third man prefer material condition. Then, we used the scenario-based questionnaire and security questionnaire (α=.91) to explore the relationship between women’s security and their material preference in mate-choosing. The result shows the women who choose the third man with outstanding material condition hold significantly lower level of security than other women who choose the first or the second man (F(2, 354)=5.53, p<0.01, ===.03, 1-β=.85). In study 2, we employ priming paradigm and manipulate security to test whether reducing women’s security would increase their material preference in mate-choosing. First, we employ a test-retest design to check whether the priming would be valid. We measured participants’ security twice. The first time was for baseline (α=.93). After 2 weeks, we manipulated the participants’ security by mortality salience and measured their security again (α=.94). Finally we got 63 valid questionnaires. The result shows priming by mortality salience significantly reduces women’s security (Mbefore=3.38, S.D.before=.67; Mafter=3.10, S.D.after=.67; t(df=62)=6.64, p<.001, d=.84, 1-β=1.00). Then, we recruited 400 (315 valid data) participants and randomly divided them into priming group or control group. For priming group, we manipulated the participants’ security and then measured their preference in mate-choosing; for control group, we directly measured their preference in mate-choosing. Chi-square test shows the two groups’ preference in mate-choosing is significantly different (x2(df=2)=6.65, p<.05, Cramer’s φ=.15). Further, ratio test shows more women in priming group choose the third man than in control group (priming group: 35.26%, control group: 23.27%, |Z|=2.37, p<.01). Overall, unmarried working women in big cities with low security are inclined to choose men with good material condition. Low security boosting the pursuit of materials is the product of the contemporary background and also a manifestation of women’s psychological needs. The results provide references for the rational guide of women’s mate-choosing.