The invention relates to a feeding mechanism and a biomass burner applying the same. The feeding mechanism comprises a stock bin, wherein a discharge hole of the stock bin is communicated with a material conveying passage; a passage outlet formed in the bottom of the material conveying passage is communicated with a feeding passage; one end of the feeding passage is communicated with the interior of a combustion chamber, and the feeding passage is obliquely arranged; the exterior of the material conveying passage is provided with a sleeve; a sealed annular cavity is formed between the inner wall of the sleeve and the outer wall of the material conveying passage; the side wall of the material conveying passage positioned in the annular cavity is provided with a plurality of through holes which penetrate through the outer wall and the inner wall; <0}{0><}0{>an air inlet of the sleeve is communicated with an air pipe; the end part of the air pipe is provided with a blower; gas is introduced into the annular cavity through the air pipe by virtue of the blower, and enters into the material conveying passage through an inclined hole. The feeding mechanism has the advantages of being good in anti-clogging performance, high in material conveying efficiency, relatively full in biomass particle combustion, simplified in structure, reduced in production cost, and the like.