NOVELTY - Biomass composite particle fuel comprises crop straw with low lignin content and heat value and wood material with high lignin content and heat value, where the preparation comprises crushing the crop straw and the wood material, mixing in a random ratio and pelleting.    USE - Used as a biomass composite particle fuel.    ADVANTAGE - The fuel: exhibits a fixed granular shape; and improves the heat value of the fuel without adding a bonding agent and other additive with high heat value.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) the production of the biomass composite particle fuel, comprising: (i) cutting the crop straw with a cutting machine into a crude material of 10- plus minus 0.2 mm, crushing into a crushed material with granularity not greater than 5 mm using a sander, (ii) introducing the straw crushed material into a drying machine for drying until the water content is 10-16 wt.%, (iii) slicing the wood material with a slicing machine to obtain a wood chip of length 10- plus minus 0.2 mm, crushing into a crushed material with granularity not greater than 5 mm using a sander, (iv) introducing the wood crushed material into a drying machine for drying until the water content is 10-16 wt.%, (v) introducing the straw crushed material and the wood crushed material into a stirring mechanism of a pelleting machine simultaneously for complete mixing, (vi) softening the mixed material with steam, introducing into a molding roller extruding system for molding to obtain particle with diameter of 6-8 mm and length of 1-5 folds of the diameter, when pressing, controlling the temperature at 100- plus minus 5 degrees C, (vii) cooling the particles, sieving, packaging the cooled and sieved particle and introducing into a storehouse; and    (2) a production device for the production of the biomass composite particle fuel, comprising a wood chipping and crushing system, a wood crushed material drying system, a straw cutting and crushing system, a straw crushed material drying system, a pelleting system and a finished product packaging system.