This book mainly introduces basic principle and often used basic methods of the adaptivecontrol. Whole book contains 11 chapters, they are preface, theoretic fundamentals of adaptive control, modelreference adaptive controls for continuous-time systems, model reference adaptive controls for discrete-timesystems, self-tuning control, variable structure control, hybrid adaptive control, hybrid adaptive control forplant with unmodelled dynamics, adaptive control of nonlinear controlled plant, fuzzy adaptive control, andapplications of the adaptive control. This book may be taken as textbook for double-language (English andChinese) teaching of Chinese postgraduates or for foreign students, also may be referenced by undergraduatesor technologists.