紧密围绕BESIII开展的物理目标，结合唯像、格点和实验，开展好两方面的研究：① 在BESIII上通过Λ_c衰变研究Λ超子激发谱；② BESIII上赝标粒子的研究。对于Λ超子激发谱，我们拟利用BESIII在4.6 GeV附近积累的高统计量数据，研究Λ_c衰变到 Σππ末态的过程，一方面我们在手征夸克模型框架下对衰变机制进行理解，同时做好中间态Λ超子激发态的分波分析；另一方面我们对 Λ_c衰变到 Σππ末态进行实验测量，在Σπ 不变质量谱上寻找 超子激发态，结合理论的分波分析确定共振态的性质。对于赝标粒子，一方面我们拟用有效拉氏量方法系统研究η(1295)和η(1405/1475)的光产生，从光产生角度为实验寻找和鉴别赝标胶球提供线索；另一方面我们拟用格点QCD方法计算赝标量胶球与η_c介子的混合大小，进一步理解赝标粒子的性质。

Focusing on the physical topics at BESIII, and combining the phenomenology, Lattice and experiments we'll carry out studies in two aspects: (i) the study of excited spectrum of Λ hyperon by the Λ_c hadronic decays at BESIII; (ii) the study of pseudoscalar particles at BESIII. For the Λ resonances, we'll study the process Λ_c decaying into Σππ by using the high luminosity data around 4.6 GeV at BESIII. In theory, we'll study this decay process within the chiral quark model, and give a partial wave analysis for the intermediate states. Furthermore, we'll measure this process in experiments, look for hyperon resonances in the Σπ invariant mass spectrum, and determine the properties of hyperon resonances by combining the partial wave analysis carried out in theory. On the other hand, for the pseudoscalar particles, we'll study the photoproduction of η(1295) and η(1405/1475) off nucleons within an effective Lagrangian approach, which may shed light on the determination and search for glueballs in experiments. Meanwhile, we'll study the mixture between pseudoscalar glueball and η_c on Lattice QCD.