Corruption is among the most frequently experienced problems in life anywhere, though with varying degree of spread and depth. There is not hardly any areas which is not affected by it. Corruption is one kind of act or misconduct in which that violates the rules and regulations, abuse of power, deviant behavior for personal gain by an authority. Police are the most visible part of the government. Police Corruption is identified as deviant, dishonest, improper, unethical or criminal behavior by a police officer. The activities such as accepting bribes and criminal activities such as burglary on duty may be included in corruption. Criminal Justice System is comprises with police, court and correction. One of the most important duties of a criminal justice system is to detect corruption and impose appropriate punishment on corrupt politicians and public officials. But, if the criminal justice system itself is corrupt, it is a grave danger to democracy.