In this paper,we think that it is the key to find the high-Tc superconductivity mechanism to study all the order parameters and all their competitive relations fully in cuprate superconductors,and we analyse that there are six kinds of order parameters which should be paid attention to in superconducting state.The dynamic inequations of their competitive relations and the superconductivity theory are constructed in this paper.Directing a series of important experiment phenomenons of cuprate superconductors,we have a mathematical analysis systematically.It is shown that two factors act on the microscopic pairing mechanism simultaneously,the main factor is the magnetic resonance fluctuation energy between dynamic superconducting phase and antiferromagnetic background phase,the secondary factor is the phonon-electron interaction in cuprate superconductors.