This book describes the health status of internal migrants in China and explores a number of related factors, which include their physical health, mental health, fertility, social integration, the current state of basic public health services in China and so on. At present, there are 245 million migrants working in China, which means 1 out of every 6 people is a migrant. The large scale of the migrant population is accompanied by a range of problems concerning e.g. public health and medical services.  This book draws on the latest findings and data to describe and analyze the health status of migrants in China from three perspectives - population distribution, time distribution and spatial distribution - and each chapter employs various advanced statistical methods, such as multilevel modeling and propensity score matching. Given the in-depth information it provides, the book will appeal to managers, clinicians, and researchers from many fields. It shares valuable insights into the health status of and related factors concerning China's internal migrants, while also providing a sound scientific basis for decision-makers.