About half of the Chinese college students suffered from test anxiety. Two components of test anxiety have been defined by Liebert and Morris (1967): worry and emotionality. Worry was typically referred to as the cognitive component of test anxiety, as it reflects the debilitating thoughts and concerns the test-taker has before or during the test, and emotionality refers to the physiological symptoms stemming from arousal of the autonomic nervous system and associated affective responses. Previous studies have demonstrated that intrinsic and extrinsic motivation, which were 2 types of self-determination motivation, have no significant correlation with the 2 components of test anxiety. However, there was no study reported the relationship between test anxiety and amotivation, which were another type of self-determination motivation. So, with the findings from previous studies, the present study investigates how worry and emotionality were influenced by amotivation by the different mediate role of procrastination of arousal / avoidance types. Six hundred and twenty four college students (329 males, 263 females, 32 unknown) from 7 universities in 3 provinces were surveyed in the unit of class. Test anxiety was measured by Test Anxiety Inventory (TAI), self-determination motivation was measured by the Academic Motivation Scale College Version (AMS-C), arousal and avoidance procrastination were measured by the Lay’s General Procrastination Scale for Student Populations (GPs) and the Adult Inventory of Procrastination (AIP) respectively. All data was processed by Amos 7.0. The analysis of correlation shows that intrinsic motivation and extrinsic motivation have no significant cor-relation with worry, furthermore, the correlation between intrinsic motivation and emotionality was less than 0.2, so was the correlation between extrinsic motivation and emotionality. This was consistent with previous findings. However, amotivation was positively related to both worry and emotionality significantly: the correlation between amotivation and worry was .47 (p<.001) and .39 (p<.001) with emotionality. Arousal procrastination were positive related to both worry (r=.43, p <.001) and emotionality (r=.41, p <.001) significantly, so was the avoidance pro-crastination (r=.60, p <.001, with worry, r=.52, p <.001, with emotionality). Further analysis by SEM showed that amotivation has direct influenced on the 2 components of test anxiety (worry and emotionality)