Hi Levege,
Are you multiplying the emissive color value by anything? (A multiplied value will increase the intensity which I think would cause the glow to shine farther)
If you use a ‘divide’ node before your emissive, does that help lessen the effect?
Yes，I multiplied a number just like before lumen came out,because I wanted a sufficiently bright emissive effect, perhaps it’s appropriate that it affects the surrounding walls, but now this lighting effect is showing flickering noise spots，and the area is too large.