Abstract: A heat retaining knit fabric is comprised of a knit textile design for outer clothing exposed in an open air wherein heat is retained inside a knit structure and a dispersion of heat is prevented when using heat of wetting generating fiber which generates heat by water adsorption and steam adsorption in a interlock stitch of plating stitch comprising minute space surrounded by two kinds of yarn at the front and the back of each knitted loop in a knit-loop portion.