中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

BESIII has collected 2.9, 6.3 and 4.4 fb-1 of e+e- collision data samples at 3.773, 4.178-4.226 and 4.6-4.7 GeV, respectively. We report recent measurements of strong phase differences in D0 and D0-bar decays of KSpi+pi-, KSK+K-, K-pi+pi+pi- and K-pi+pi0. The obtained parameters are important to reduce the systematic uncertainty in the gamma/phi_3 measurement at LHCb and Belle II. Also, we will report the first observations of some new hadronic decay modes and the absolute branching fractions measurements. Moreover, the amplitude analysis results of Ds -> K+K-pi+, pi+pi+pi-, KSpi+pi0, K+K-pi+pi0, etapi+pi+pi-, and D+ -> KSK+pi0 will be presented. In addition, recent results on Lambda_c decays will be presented.