The supervision system of investigation power of duty crimes exercised by the procuratorial organ in China emphasizes interior supervision and disregards the external supervision.The interior supervision can't work well,as a result,the investigation power of duty crimes is always misused.It's needed to strengthen the external supervision from the interested parties,the court and the People Supervisors to the procuratorial organ to consummate the supervision system of investigation power of duty crimes.Also,it's needed to strengthen the investigation supervision fr...