The purpose of this study is the evaluation of HD-EMG feature extraction andselection for the classification of Lower Limbs Daily Living Movements for the control of arehabilitation exoskeleton. The movements considered in the experimental protocol were:Stand to sit, sit to stand, stair ascending, stair descending, a gait cycle, rest in uprightposition and rest in a sitting position. In particular 17 features, divided in time domainand frequency domain, have been taken into account. Monopolar signals were recordedfrom 7 muscles using 4 matrices of 32 electrodes placed on Rectus Femoris, Vastus Medialis,Vastus Lateralis and Tibialis Anterior and 2 matrices of 64 placed on GastrocnemiusMedialis and Semitendinosus & Biceps Femoris.