The research destination of this paper is for fuselage’s stealth design, comparing three canonical sections’ stealth performance and the result can provide support for aircraft’s shape stealth design. Three typical stealth fuselage sections (concave, convex and plane-curve) are designed and the radar cross section (RCS) and the surface current are calculated with 2-dimensional method of moments (MoM). The characteristics of RCS's variance versus the aspect angle are analyzed and the stealth performances of the sections are compared via the overall and critical angle domain's RCS averages. The analysis results show that concave and convex fuselage can reduce side RCS and the convex's stealth performance is better. Plane-curve fuselage's side and down's RCS is small except for a narrow peak right in the down direction and this fuselage has good stealth performance in countering up-looking radar.