11 meters.

In residential buildings and commercial and residential complex buildings without lampblack prevention facilities, catering business premises that produce lampblack pollution shall not be set up, and the horizontal distance from the boundaries of buildings with adjacent residential buildings, schools, hospitals and other environmentally sensitive points shall be more than 11 meters, and the orientation must avoid buildings that may be affected.

the established catering business premises must meet the requirements of urban and rural planning, overall layout planning of catering industry and environmental functional zoning. Those who fail to go through the examination and approval procedures of environmental impact assessment shall go through the formalities within a time limit according to the requirements of the local environmental protection department, and at the same time implement various pollution prevention measures to meet the requirements of environmental pollution prevention and control.