Lindong meteorite is the first breccia found in Inner Mongolia, classified into LL5-6 ordinary meteorite. The deeply studied petrography and mineral chemistry of Lindong meteorite indicates that it is a regolith breccia. Lindong meteorite mainly consists of lithic, mineral, and relict chondrule clasts set in a fine-grained and loosely compacted matrix. The rock structure shows obvious difference between different clasts, which reflects the different degree of metamorphism, and the diverse clasts could be classified into 4, 5, and 6 petrographic types. Based on the Fa value（29.7 mol%～30.5 mol%）of olivine, Fs value（24.9 mol%～26.1 mol%）of low-Ca pyroxene, and Co content（2.38%～2.51%）of kamacite, the meteorite can be classified into LL chemical group. The loose matrix is formed by consolidation of micron sized mineral debris. The similar mineral chemical compositions between the diverse clasts and the matrix suggest that they should come from the same asteroid and ejected from the surface of the parent asteroid after multiple brecciations. Lindong regolith breccia could record the evolution history of the asteroid surface and solar wind radiation, which is very helpful for studying the evolution history of early solar system.