Magmatic inclusions can directly provide valuable informations on the chemical composition variation of crystallization evolution of natural magma. In order to obtain correct and reliable chemical composition data of magnnatic inclusions and to be able to explain and deduce them reasonably, we have to pay great attention to following problems:1) The chemical compositions of non-evolved magmatic inclusions may represent their initial compositions. The chemical compositions of glass phases in evolved magmatic inclusions can not represent their initial compositions. We have to analyse the quenched inclusions after homogenization in order to obtain the initial chemical composition of this type of evolved inclusions.2) The homogenization thermometry study of magmatic inclusions has to follow strictly the thermometrieal rule.3) The author's experiments reveal that the influence of "boundary layer effect" upon the chemical composition of magmatic inclusion is insignificant.4) The chemical composition of magmatic inclusion represents only the composition of ambient magma during crystallization growth of their host minerals. The detailed study of magmatic inclusions in various minerals of magrnatic rocks can help us to reconstruct more completely the evolution history of magma.5) The more mature methods of study on volatile materials trapped in magmatic inclusions are combining Raman microprobe spectrometry, microprobe analysis and microthermometry.