The purpose of this study is to explore the applicability of the Person-in-the-Rain (PITR) drawing test as a psychological evaluation tool to assess army soldiers’ perceived stress, stress responses, and mental health status. The subjects of the study were 281 soldiers from four army units, and the research tools included the PITR drawing test, the Perceived Stress Scale, the Stress Response Scale, and the Symptom-Check List. Data were analyzed using descriptive statistics and independent sample t-test, and the results were as follows. First, the expression of raindrops, the wetness of rain, and the presence of lightning in the stress item among the PITR single items showed significant differences. In addition, the presence of protection, the presence of an umbrella, protection size, integrity of protection, appropriateness of person size, and whole body expression in the resource item presented significant differences. Therefore, the PITR resource items presented stronger discrimination power than the stress items. Second, there was a significant difference in the perceived stress when comparing the upper and lower groups based on the PITR Coping Capacity score. Based on these results, we discussed whether the PITR could be considered a useful tool to evaluate army soldiers’ perceived stress, stress responses, and mental health status.