Patients with schizophrenia have severe social cognitive deficits， and the impairment of facial emotion recognition is an important aspect of social cognitive impairment. This symptom exists stably in the population of different stages of schizophrenia. Quantified event-related potentials are used to explore the mechanism of facial emotion recognition deficits and to deepen the understanding of the disease. This article reviews the features and mechanisms of facial emotion recognition deficits and event-related potentials in schizophrenia.