This paper presents a multi-frequency and multi-mode dipole antenna based on balanced microstrip line. The antenna employs an asymmetric feeding approach, achieving a reflection coefficient below -10 dB in three frequency bands: 1.30- 1.64 GHz, 2.4-2.7 GHz, and 3-4.05 GHz. Moreover, within the operational frequency range, it exhibits omnidirectional radia�tion characteristics and two-directional radiation characteristics respectively. The antenna presented in this paper achieves differ�ent current distribution patterns in the three frequency bands, enabling multi-mode radiation characteristics in the Sub-6G frequency range. It possesses the advantages of low profile and light weight, showing potential applications in miniaturization and cost reduction for wireless systems in 5G applications.