Building on Party ideology is a fundamental and important content of Party building and rectification and an important regular and urgent task of the entire Party, People and Army. Party building is a vast issue that requires elaborate research with the participation of many different forces under many different approaches and scales and levels of research. The book consists of two parts, dealing with basic theoretical and practical issues of Party building in terms of ideology in the new situation and contents and solutions for Party building in terms of ideology in the new situation. The book is a useful reference, contributing to mastering and clarifying the views, orientations, and serving the task of Party building in terms of ideology in the spirit of the Resolution of the 13th National Congress of the Party.