The bureau of letters and calls is usually a second-level bureau under the general office, which is equivalent to the deputy department level (such as the deputy department level), or even just an internal institution.

Responsibilities of the Letters and Calls Office (1) To implement the principles, policies and regulations of the Party committees and governments at higher levels on letters and calls. (two) to handle the letters from the people to the Party Committee, the CMC and its leading comrades, to receive the people who come to the CMC to petition, and to publicize the relevant principles, policies, laws and regulations of the party and the state. (three) to undertake letters and visits assigned by the Party Central Committee, the State Council and other central organs, provincial authorities such as the provincial party committee and the provincial government, and municipal authorities such as the municipal party committee and the municipal government. (four) to coordinate the investigation and handling of emergency and major letters and visits. Do a good job in emergency coordination and disposal of sudden mass incidents. (five) in accordance with the principle of territorial management and graded responsibility, who is in charge and who is responsible shall be transferred to the relevant departments and units for filing and assignment. Check and urge the responsible units to investigate and deal with letters and visits from the masses. Review the petition files closed by the responsible unit. Report the results of handling letters and visits cases transferred and assigned by superiors. (six) comprehensive analysis, investigation and study of the important situations and problems reflected by the people's letters, timely reflect to the leaders of the Party Committee and the Management Committee and relevant departments, and put forward opinions and suggestions to solve the problems. (seven) to guide the petition work of various functional departments; Training cadres of letters and visits, summing up and popularizing advanced experience.