Time estimation is very common and important in people’s daily life. The relationship between personality and time estimation has been explored for decades of years in western countries. Some personality traits such as extraversion, neuroticism, psychoticism, openness, impulsiveness, conscientiousness, delay, focus of control, yuppie traits and hippie traits, and type A were found to be related with time estimation. In addition, feedback is another factor which could influence time estimation. However, to our knowledge, no empirical study referred to the relation of personality, feedback and time estimation was published in China. This study wants to explore the relation of personal self-supporting, feedback and time estimation. Personal self-supporting is a primary facet of self-supporting personality. Self-supporting personality is a traditional concept in Chinese culture and is considered to be a positive personality. 40 subjects were chose from 766 college students according to their scores on the personal self-supporting subscale of Self-Supporting Personality Scale of Adolescent Students（SSPS-AS）. They were divided into high personal self-supporting and low personal self-supporting groups. Subjects were asked to complete picture puzzle and then estimation how long they used. One half of high personal self-supporting and low personal self-supporting subjects were told the results. And the other half were not told. The results showed that: (1) Though the absolute errors of time duration estimation of self-supporting high group were fewer than low group in the two times’ time duration estimation, the difference was not significant. (2) The range of variation of absolute error of time duration estimation of self-supporting high group was significantly lower than low group. (3) The correlation coefficient of absolute error of time duration estimation between the two times of self-supporting high group was higher than low group. （4）The absolute errors of time duration estimation of feedback group were fewer than no feedback group. The results support implied that the individual differences caused by personal self-supporting in time estimation may exhibit on variability of time estimation error and accuracy of time estimation. The variability of time estimation error of high personal self-supporting people is lower than low personal self-supporting people. High personal self-supporting people tend to estimate time more accurate than low personal se