Psychological test depression questions have a certain degree of accuracy and credibility. Currently, there are two main types of questions for testing depression, one is self-test and the other is other-assessment. Self-assessment means that the patient answers the questions himself, while other assessment means that two or more psychometricians ask questions to the patient and rate the patient’s answers. The main self-assessment scales are the PHQ-9 Depression Test Scale and the SDS Depression Self-Assessment Scale, and the main other assessment scales are the Hamilton Depression Inventory. Strictly speaking, the accuracy and credibility of the other-rated scales are much higher than those of the self-rated scales. However, none of the scale ratings are as accurate as the psychiatric examination, which is a long-term communication and exchange between the psychiatrist and the patient to make a comprehensive and holistic evaluation of the patient’s mental activity and thus arrive at a diagnosis of whether the patient has depression.