During the period of“11th Five-Year Plan”，complied with the demand of The Times，The Office of Beijing Municipal Government of Letters and Calls used new perspectives and new thoughts on work，innovated ideas，actively promoted the work more scientific，more emphasized，more professional and more digital.In the new concept，The Office of Beijing Municipal Government of Letters and Calls perfected the work system，and the function of The Office of Beijing Municipal Government of Letters and Calls transformed from traditional secretarial type to functional type，from participating in guarantee type to participating in the decision-making type.