The present disclosure relates to the technical field of mobile communication, and particularly to a method for manufacturing an antenna, and further relates to a mobile device. The manufacturing method provided comprises: S1: forming a paint coating on a surface of a ceramic back shell; S2: forming a concave area on the paint coating; and S3: forming the antenna in the concave area. The antenna manufactured by using the method for manufacturing an antenna provided by the present disclosure is difficult to bend, and is difficult to come into untight attachment with a back shell of a mobile phone, which can make the antenna occupy an installation space in the mobile device as little as possible.