Abstract: The Larch thinning juvenile wood (Larix gmelini (Rupr.) Kuz.) is indicated rapid wood increment, light colour (heartwood has not yet formed), lower percentage of latewood and even-textured (smaller differences between the structure of early- and late wood, transition from early- to late wood gradual to more or less abrupt). The fibre morphological characteristics include : short length of tracheids, thinner cell wall, lower Runkel ratio (2w/l) and lower coefficient of flexibility (l/D). In a word, these characteristics and the ratio of fibre length to cell wall thickness (L/D) are better than those from branchwood and stemwood, especially in latewood tracheids. The Larch thinning juvenile wood (and topwoods) is supposed to be a suitable raw material for pulping and papermaking. The pulp yield from the Larch thinning juvenile wood is higher than that from branchwood and is similar to that from stemwood. The strength of paper made from both barked and unbarked thinning juvenile wood also meets. The National Technical Standard of Kraft Bag Paper and is better than that made from branchwood of the same species. Newspaper may be made from the above raw material by means of logor chip-groundwood pulping processes. Prosperous growing and development of Larch in its juvenile stage explained itself as a favourable species for short-rotation intensively cultured (SRIC) system in the northern provinces of China. For the purpose of promoting a rapid growing increment during the juvenile period (first decade) of Larch and greatly increasing the yields of fibres per unit area, the author suggests that those authorities concerned must do some further experiments on this SRIC system and make some plantations for pulp and paper industry.