Doctor-patient trust consists of two indispensable dimensions：patients’ trust and doctors’ trust. It can be broken down into three levels：the interpersonal trust between doctors and patients who are in direct involvement，the inter-group trust between medical workers group and patients group，and the institutional trust the patients group holds in the medical institutions and systems. Constructing valid measurement instrument of doctor-patient trust level，analyzing the social psychological mechanism of doctor-patient trust crisis，exploring the evolution process of doctor-patient trust under diverse treatment situations，verifying cognitive and judgmental styles of medical workers and patients in the interaction process，and putting forward operational models and strategies for trust repair are the major tasks of studies on doctor-patient trust from a social psychological perspective. Apart from the advance of medical system reform，the construction of a harmonious social mentality on doctor-patient trust is also crucial to the improvement of doctor-patient relationship and the alleviation of doctor-patient trust crisis.