Abstract: It is discussed that various bosons an d fermions are compo sed of subquarks by the simplest rishon model,then some poss ible leptoquarks ond other new particles can be obtained .Further,a simple dynnm ical model of quark? lepton composite struction is proposed.From this the “colour” is unn ecessary.T he model is consistent with the known mass relations and decay modes of particle s .Finally ,some problems of the massive neutrinos.and the relation be tween the neutrinos and relativity are reseerched brief...