Is it illegal to post small advertisements on the wall? What legal provisions are violated?

It is illegal to post small advertisements on the wall at will, which violates the Regulations on the Administration of City Appearance and Environmental Sanitation.

according to article 17 of the regulations on the administration of city appearance and environmental sanitation, no unit or individual is allowed to scribble or depict on city buildings, facilities and trees. Units and individuals in the city buildings and facilities, posting promotional materials, etc., must be approved by the city people's government administrative department of city appearance and environmental sanitation or other relevant departments.

article 11 outdoor advertisements, placards, galleries, windows, etc. shall be set up in cities with healthy contents and beautiful appearance, and shall be regularly maintained, painted or removed. The establishment of large-scale outdoor advertisements must obtain the consent of the administrative department of city appearance and environmental sanitation of the people's government of the city, and go through the examination and approval procedures in accordance with the relevant provisions.

Extended information:

Article 36 of the Regulations on the Administration of City Appearance and Environmental Sanitation commits one of the following acts, and the administrative department of city appearance and environmental sanitation of the people's government of the city or the unit entrusted by it shall order it to stop the illegal act, clean up, dismantle or take other remedial measures within a time limit, and may also be fined:

(1) Without the city appearance and environmental protection of the people's government of the city.

(2) without the approval of the administrative department of city appearance and environmental sanitation of the people's government of the city, stacking materials and erecting buildings, structures or other facilities on both sides of the street and public venues without authorization, thus affecting the city appearance;

(3) Dismantling environmental sanitation facilities without approval or failing to carry out demolition according to the approved demolition plan.

article 37 where buildings or facilities fail to meet the standards of city appearance and environmental sanitation, the competent department of city appearance and environmental sanitation administration of the people's government of the city shall, jointly with the competent department of city planning administration, order the relevant units and individuals to renovate or dismantle them within a time limit; If it has not been rebuilt or demolished within the time limit, it shall be forcibly demolished by the administrative department of city appearance and environmental sanitation of the city people's government or the administrative department of city planning with the approval of the people's government at or above the county level, and may also be fined.

China government network-regulations on the administration of city appearance and environmental sanitation