To test for smiling depression depends mainly on several aspects, consider the symptoms of depression, such as low mood, not happy, depressed mood, always sullen, or reluctant to go out to meet people, easy mental fatigue, and people become lazy. Diet is affected, such as eating poorly, and sleep problems, such as insomnia or sleepiness. There may also be pessimism and disappointment about the future, low self-esteem, and even negative thoughts. If these problems persist already for more than two weeks, it is very likely that depression is the problem. As for smiling depression, the patient’s previous personality characteristics should also be considered, such as whether he or she is outgoing and cheerful, with a very sunny surface, and even many people would think that there is no possibility that this person could have a depression problem. If you are particularly happy in front of people, always smiling and showing people, but your own inner experience is particularly depressing and painful, or even if you already have the above depression performance, you should consider whether it is a problem of smiling depression. However, the diagnosis should be based on the psychiatric consultation with the doctor in person, especially the systematic psychological tests, such as the Depression Self-Rating Inventory or the Symptom Self-Rating Inventory, and only through comprehensive judgment and testing can we accurately determine whether the problem is depression or smiling depression.