The invention discloses a dual-band circularly-polarized shaped antenna. The dual-band circularly-polarized shaped antenna comprises an upper layer printed board, a lower layer printed board, a metal base, a radio frequency connector and a feeding network. Directional diagram shaping in a thermal insulation preventing antenna window installation environment is realized by relative positions between metal probes and copper clad layers, and joint action of a lower layer printed board metalized via hole structure, so that shielding on the low elevation-angle directional diagram from the installation environment is reduced, and the directional diagram radiation performance of the antenna is optimized.