Three wood species, Manchurian Ash（Fraxinus mandshurica）, Manchurian Walnut（Juglans mandshurica） and Spruce （Picea jezoensis var. komarovii）,and two kinds of adhesives, （water）based polymer-isocyanate and water-solidified polyurethane, were selected to make laminated flitches. The water resistance of the flitches, along with the thickness warp and surface roughness of the sliced laminated veneer cut from the fliches, were tested. After hydrothermal treatment, （only）part of the Ash Laminated flitches made with water based polymer-isocyanate were found to have peeled, whereas the other two species of laminates made either with water-solidified polyurethane or water based polymer-isocyanate, showed good bond property and water resistance. The surface roughness of the three species of laminated veneer at 0.60 mm thick could meet the （corresponding）requirements in National Standard GB/T 13010-1991.