Objective         To investigate the effects of trait anxiety and personality characteristics on risk decision making under different frames of information. Methods        A self-designed risk decision questionnaire

Eysenck personality questionnaire(EPQ) and the state-trait anxiety inventory(STAI) were surveyed in 403 subjects from a military university. The subjects were randomly divided into 2 groups

the positive frame group (n=202) and the negative frame group (n=189)

through the cluster sampling. A Chi-square test was conducted between the 2 groups for statistical analysis. Results         ①Under positive information frame

32.18% of the subjects tended to be conservative and 67.82% of them were prone to be risky. Under negative information frame

the percentage of being conservative and risky were 20.63% and 79.37%.The difference between the 2 information frames was statistically significant(P0.05). Under negative information frame

80.71% of men chose to take risks

but it dropped to 67.55% under positive frame information. The decision change under the 2 information frames was significantly different in men (P0.05)

but not in women. ②Under positive information frame

24.19% of high neurotic subjects were conservative

while 75.81% of them were risky. For low neurotic subjects

the percentage were 46.00% and 54.00%. The difference in decision making under different information frames were significant (P0.05). Under negative information frame

there was no significant difference between the high and low neurotic groups. Moreover

in either frame

no significant difference in decision making was found between the introverted and extroverted personalities. Conclusion        Under negative information frame

the military individuals are more likely to take risks.Under positive information frame

subjects with high neurotic personality are more related to risk decision making behavior.