In order to learn about the level of interpersonal trust nowadays and explore how the influence cultural factors exerts on interpersonal trust changes with age, a cross-temporal meta-analysis was applied to examine the cultural factors of interpersonal trust level and the culture of individualism and collectivism used as the distinguishing method. According to certain standards, 87 literatures about interpersonal trust are selected at home and abroad from 1967 to 2015, among which 72 literatures are under the culture of collectivism, involving 32587 participants, and 15 literatures are under the culture of individualism, involving 20406 participants. The results show that: (1) the interpersonal trust under the culture of collectivism (t = -0.40, df = 72, p = 0.692 > 0.05) is in the middle level, interpersonal trust under the culture of individualism (t = -3.57, df = 21, p = 0.002 < 0.05) is lower than the medium level, each P values of the equations estimated by the curve is more than 0.05, which shows that the level of interpersonal trust under these two cultural backgrounds do not change over year; (2) the results of analysis of variance is P = 0.003, indicating the level of interpersonal trust under the culture of collectivism is significantly higher than the level of interpersonal trust under the culture of individualism; (3) the level of interpersonal trust of male and female have no significant difference. Summary: The interpersonal trust level of collectivism is higher than individualism and they don’t have the age-effect and gender difference.