According to the World Health Organization (WHO), suicide rates in South Korea are the highest in the world. Suicide prevention is one of the most important public health and social issues in South Korea. To this end, there are many community support programs for patients who attempt suicide or self-harm, with the purpose of reducing re-attempt rates. In line with such trends, the Department of Emergency Medicine (ED) at Korea University Ansan Hospital (KUAH), in conjunction with the Ministry of Health, launched a Crisis Intervention Team (CIT) for suicide attempt patients. This study analyzes the effect of the CIT on community support program linkage for suicide attempt patients that visited the ED. This is a before-and-after analysis, which was conducted in the ED of a tertiary academic teaching hospital in Ansan, Korea. Data on suicide attempt patients was collected using ED medical records and was matched against the database of community mental health care centers, where patients were referred for follow-up. The intervention group was defined as suicide attempt patients visiting the ED from Jan to Dec 2015 and the control group was defined as suicide attempt patients visited the ED from Aug 2014 to July 2015. Before the creation of the CIT, suicide attempt patients were referred to community mental health care centers directly from the ED for counselling after ED discharge. Patients are followed up for at least 8 weeks. Comprised of two social workers, the CIT began active counselling in the ED, with regular contact post-discharge to guide suicide attempt patients to maintain longer-term counselling with community suicide prevention centers. Primary outcome was completion of 8-week follow-up by community mental health care centers. A multivariable logistic regression analysis was used to compared outcome between two groups adjusting for potential risks; sex, age, insurance level, initial mental status, suicide mechanism, ED result. Of the total 47,911 patients visiting ED during the pre-intervention period, 318 (0.7%) patients (control group) attempted suicide, and among the 49,534 patients from the post-intervention period, 360 (0.7%) patients (intervention group) attempted suicide. The most common suicide attempt method was drug ingestion in both groups (control group N=174, 54.7%, intervention group N=197, 54.7%). Completion rates of the 8-week follow-up was 19.6% in the control group and 88.4% in the intervention group. (p<0.001) The adjusted odds ratio (95% confidence interval) of the intervention group compared to the control group for completion of follow up was 6.47 (3.08-13.60). Intervention with the CIT showed higher rates of completion of the 8-week follow-up counselling program provided by community suicide prevention centers. Further study to investigate the long term outcome of the suicide attempt patients is warranted.