First look at the final effect
Draw the background icon first
Draw a circle, to control the circle that is drawn is a circle, not an ellipse, hold down shift. Fill background to green with radial gradient
A light-green graphic with a semicircle and a splash of waves.
Gets the intersection between the circle in the middle and the circle on the left, the difference between the middle circle and the right and left sides of the circle; then use the direct selection tool to remove the desired part, with the intersection set, narrow the embedded circle, group
The edge of the middle circle is made up of two rings, and two rings are made in the same way. Copy a circle with the same size as the middle circle, offset path, and differential set, adjust the gradient background
Set the two rings of the same method into a circle, grouping
Next draw the characters
Draw a circle, then draw a larger ellipse, and then join together
Draw a larger ellipse, bring up the path finder "intersection" and cut out the extra parts
Linked sets
Press and hold the a|t key to copy one, zoom out
Offset path , with path , minus the top level
In-situ pasting
Grouping
Fill the picture with white, place it in the background icon, and place it on the top level
Group icon Drawing (gradient effect)