Abstract: Lazigou Gold District is located in the middle section of Muping-Rushan metallogenic belt.The Jinniushan fault is the main ore-bearing structure in the mining area.Rubefication develop widely in both the hanging wall and the foot wall of ore-hosting faults.In the study,the electron probe analysis and micro-zone X-ray diffraction analysis experiments were carried out.Experimental results show that the rubefication alteration rocks in Lazigou Gold District are mainly sodium feldspar and potassium feldspar,and the rubefication is actually the alteration that combines sodium feldspar alteration,potassium alteration,rutile alteration,magnetite alteration,chlorite alteration and carbonation alteration.This alteration combination can be called red alkaline alteration.The origin of the deposit can be summarized as the mechanism of electrolysis-ionization mineralization,rubefication alteration rock is the active region of gold element,and beresitization alteration rocks are the gold element accumulation area.A series of electrochemical reactions including gold electrode reactions and water ionization reactions play key roles in alteration mineralization.