This book focuses on general songs, art songs and pop songs, and is suitable for readers who have just started writing songs and mastered the staff, as well as readers who have a preliminary understanding of harmony. Divided into the first and second parts. The first part is how to write down the lyrics step by step, that is, how to extend sentence by sentence along the structure as the main line. Therefore, the structural arrangement, the combination of melody and lyrics and the general song writing skills are the main contents of the first part. The second part is about some technical contents of writing and the genre of related songs.