This book gives a review about the grain quality of wheat under the post harvest storage system. It has been observed that very high percentage of wheat kernels has been lost under post harvest storage. The work done on the biotic stresses of post harvest stored wheat grains is scanty. Therefore, it became very much necessary to estimate the quality of wheat grains under storage. This may help to minimize the spoilage of stored grains as the wheat crop is playing a vital role in the Indian economy which is contributing around 32% of total food grain basket of the country.The biotic and abiotic factors influence the various physical and chemical properties of wheat grains under post harvest storage. The various physical, microbial and biochemical analyses of post harvest storage wheat grain is an essential component to evaluate the grain quality in various Indian wheat varieties and also important for facilitating the minimal post harvest food grain loss. Readers are encouraged to use the unbiased information provided in this book to formulate rational opinions about the wheat. It is also hoped that readers will appreciate the wonder of nature and the creative ways.