This study conducts a case analysis on a representative social service organization for individuals with intellectual disability in Macau, designated as Organization A. By utilizing participatory observation, the research aims to gain insight into the current status and existing issues of vocational education implemented by social service organizations for individuals with intellectual disability in Macau. After conducting on-site investigations, the researchers found that the organization has a wellestablished operational model, with vocational education content divided into two major categories: vocational skills and workplace adaptation. In terms of teaching methods, simulated role-playing is frequently employed. However, the organization still faces some challenges, including limited space that cannot meet teaching demands, unfair training programs, and frequent instances of students’ inattention or disruptive behavior in class, which hinder the teaching progress. Researchers suggest that Organization A should expand and optimize teaching facilities, plan trainees’ training programs more comprehensively, establish positive incentive mechanisms, and strengthen mentor training, in order to better serve individuals with intellectual disability in the future.