PS use paint bucket when the cause of the white edge is "brush" caused by the edge of the paintbrush is a soft edge, so there will be a color difference between the edges, so the use of paint buckets will be in the paintbrush edge left a circle of white edges, the following solution is given:

One of the first demonstration of the reasons for the appearance of white edges, the first demonstration of the reasons for the appearance of white edges. At this point, use the brush tool (here to set the hardness of the brush to the highest demonstration) to draw an arbitrary closed shape.

Second, then use the paint bucket to close the shape of the internal fill, can be found after the fill will appear a circle of white edges, indicating that the use of the paint bucket to the Brush tool to fill the closed area will appear white edges.

three, the following is the solution, right-click on the brush tool, and then select "Pencil Tool".

four, then use the pencil tool to draw a closed shape at random.

Fifth, use the paint bucket to fill again to find that the paint bucket to fill the area drawn by the pencil tool will not reproduce the white edges of the situation (if you have to fill the area drawn by the paintbrush tool, you can click the left mouse button a few times to fill in the second step, but also be able to eliminate the white edges of the situation).