The present study aimed at examining the psychometric properties of " Psychological Core Health Diathesis Scale for Chinese Adults", and investigating the general situation of psychological health diathesis of Chinese migrant workers, in comparison with the national adult norm. " Psychological Core Health Diathesis Scale for Chinese Adults" was applied among 855 valid samples of migrant workers in different genders, ages, education levels and occupation categories from six administrative regions in China. The results showed that: 1) The subscales in " Psychological Core Health Diathesis Scale for Chinese Adults " had acceptable psychometric properties on reliability and validity. 2) The total core diathesis score of migrant workers was above the average compared to the national norm. 3) Compared to national norm, migrant workers significantly scored higher on the subscale of emotionality, while no significant variance was found on other subscales. 4) There was significant gender differences on the subscale of hardiness, and significant age differences on the subscales of interpersonal health and emotionality. Significant difference was also found among different occupations in self-concept,hardiness, and total core diathesis score. It was concluded that " Psychological Core Health Diathesis Scale for Chinese Adults" is applicable for the population of migrant workers in China; and Emotionality of the migrant workers is significantly higher than the national norm, while loadings of other diathesis traits have no significant difference with the norm.