Personnel departments have been told to closely monitor candidates' daily behavior and pay attention to how they perform under pressure.
Promotion candidates' personality and moral character will also be considered, according to a directive issued by the General Office of the Communist Party of China Central Committee.
A supervision database on the candidates' conduct should also cover their professionalism along with any comments and reports gathered from the internet, according to the directive.
The move is aimed at ensuring that Party committees at all levels only promote "loyal and clean officials", or those who have made remarkable progress in reform and development. Officials who are found to have broken Party rules or laws will not be eligible for promotion.
When misconduct is discovered, personnel departments must interview the candidates to decide if they are fit for promotion, especially those who are being considered to head local Party committees.
Every post must have a detailed job description before the promotion process starts, according to the directive. Candidates must be those who are most suitable for the position.
Before officials are assigned to new posts, personnel departments must look further into their resumes, social backgrounds and relationship with family members, the directive states.
There must be full organization and supervision of officials, and heads of Party committees will be held accountable if negligent officials are promoted, the directive states, adding that such cases will be made public.