After more than a century of unremitting efforts over several generations, particularly in recent years, magmatic immiscibility has been received attention from industry, reaching unprecedented heights in theory and practice. Large- scale immiscibility of acidic magma was first discovered by the authors in volcanic rocks along the southeastern coast of China.Through a detailed petrographic study, it was revealed that the magma has two liquid phases immiscible separations under the condition of temperature between 900℃ and 650℃ and the change of supercooling degree. One phase is the silicon- rich spherule phase and the other is the iron- rich matrix phase. The spherules may be formed by the anionic agglomeration of silica tetrahedron with high viscosity and rich bridged oxygen phase. After nucleation, emulsion droplets, that will be integrated into plastic spherules will be formed. The ball collision will be combined to establish spherical individuals. The spherical individuals have experienced three generations of collision and repeated overlapping growth. Under the comprehensive action of buoyancy and magma upwelling, numerous spherical particles are separated from molten slurry, floating up and cloud integrated with large- scale silicon- rich spherical facies, namely spherule rhyolite porphyry geological body, and the iron rich matrix facies sinks to form the dacite geological body. Geochemical characteristics show that the main elements SiO2, K2O, Na2O and trace elements Ba and Sr are enriched in the spherule phase, while the main elements Al2O3, TiO2, MgO, TFe2O3and trace elements Rb, Cs, Zr, Hf, Th, Ta, Nb, La, Ce, Ni, Co and ΣREE are enriched in the matrix phase. With the increase in the proportion of spherule phase, that is, the spherule growth, the matrix phase is decreasing, and the material exchange and migration between the two phases obviously show that the residual magma is evolving towards the basic direction, which may be the main path of the immiscibility evolution of acid magma.