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In high energy scattering, multiproduction process is unique in its relevanceto the total cross section and in its global property such as rapidity andother kinematic distributions. If there is hard interaction, the jet rate andstructure is a good arena of perturbative chromodynamics. However, once anyhadron is specified, its property and structure must make sense while theglobal and/or perturbative chromodynamics mechanism still can put importantconstrains. The relation of the hadron property and structure with itsproduction cross section, distribution etc. can be much more complex than itsdecay width. In one hand there are many difficulties and challenges incalculation; on the other hand, production process provides unique way to studythe details of property and structure of the hadron, which is beyond theapproach of its decay process. Here I review our works on such topic in recentyears, mainly on the multiquark state production in multiproduction process andthe Bethe-Salpeter wave function in exclusive process. For the former, Iemphasize on the unitarity of hadronization process and relevant models, sothat Almost No multiquark state is observed in multiproduction process; I alsoaddress how to calculate hadron molecule production in multiproduction process;the most recent observed $T^+_{cc}$ is also stated with its relevance to colourand baryon number fluctuation of the preconfinement clusters. For the latter, Iemphasize the Dirac structure of the hadron-quark coupling vertex.

Study hadron property and structure in high energy multiproduction process