Dark Sector and Axion-Like Particle Search at BESIII

Dark sectors appear in many extensions of the Standard Model, and are ideal candidates to compose part or all of the missing matter of the Universe. BESIII experiment has collected the largest data samples at the $$J/\psi$$ and $$\psi(3686)$$ on threshold in the world, with great potential to search for dark sector and physics beyond the Standard Model. In this proceeding, we summarize the recent searches for dark sector and axion-like particles at the BESIII experiment.