The form of internal recruitment is

Relevant recruitment forms include internal promotion, job exchange and job rotation.

1. internal promotion: when there is a vacancy in an enterprise, the position is filled by promoting the existing employees, which usually involves the evaluation of the employees' performance and ability.

2. Job change: Adjusting existing employees from one job to another can improve the skill diversity of employees and help enterprises make better use of internal human resources.

3. Job rotation: employees are transferred from one job to another in the organization, giving employees the opportunity to experience different job responsibilities and environments. Doing so can improve employees' diversified skills, enhance teamwork ability, and help employees' personal career planning and development.