This book is based on awareness of the Bangladeshi small farmers regarding effect on climate change on their farm ecosystem. Basically the poor and less literate small farmers in Bangladesh are quite unknown about the actual effect of climate change but they have realized it in their day to day farming activities and due to lack of knowledge and awareness they are not enable to cope up with this climate change phenomenon. Actually this is a rare type thesis work in Bangladesh. Very few researches were conducted in Bangladesh based on this topic specifically.So, this book may be a mile stone in Bangladesh Context so far for farm level researches based on climate change and its effect on farm ecosystem. In this book the three components like biotic, abiotic and micro-climatic components of farm ecosystem were identified critically and have discussed widely.But this book is not self sufficient on discussed topic. Further study would be conducted in this regard. If any suggestions, comments and other query please let know the author and the author will appreciate those cordially.Hope for the best. May the supreme consciousness give us the ability to do something well for the mankind.