Apamarga (Achyranthesaspera Linn.) Tikshna kshara(Strong potency alkaline) is analkaline substance obtained from filtrate of water soluble contents of Apamarga ash, after evaporating it to dryness. Achyranthesaspera Linn. isfrom Amaranthaceae family which called Apamarga in Sanskrit and Chaff tree in English. Achyranthesaspera is very usefull plant of Ayurveda which is use in different diseases condition like vomiting, bronchitis, heart diseases, piles, dysentery, blood diseases and as laxative, stomachic, tonic etc. The present study involves the macroscopy, microscopy and physicochemical evaluation studies of Achyranthesaspera of whole plant (steam, leaf, root, and seed) as well its Tikshna Kshara(plant alkali). These observations will help in proper authentication and standardization of the drug and also to check adulteration in the raw drug.