Patients with PSD have the characteristics of high incidence rate, difficult identification and great harm. However, the existing AI chat platforms have not developed any relevant software or programs for PSD patients. Given that the chatbot function in the "Douba" software is relatively mature and can flexibly modify the corresponding intelligent agent according to user needs, this study intends to appropriately supplement and optimize the AI agent in the "Douba" software to explore the effect of the chatbot in the software in alleviating the symptoms of PSD patients.