1. Adjust control points: When creating an offset curve, you can adjust the shape of the curve by adding, deleting or moving control points. By adjusting the position of control points, the curve can be smoother.

2. Use the curve smoothing tool: UG software provides the curve smoothing tool, which can automatically adjust the shape of the curve to make it smoother. Select the curve smoothing tool, and then select the curve to be smoothed, and the software will automatically optimize the shape of the curve.