This book can be useful for researchers but also for those who want to initiate in the field of fuzzy fractional differential equations. (Vasile Lupulescu, zbMATH 1482.34001, 2022) In this book, the first of its kind in the literature, the author presents some significant results obtained in the theory of fuzzy fractional differential equations, while emphasizing his own contributions. this reviewer believes that this book can be useful for researchers as well as for those who want an initiation to the field of fuzzy fractional differential equations. (Vasile Lupulescu, Mathematical Reviews, April, 2022)