Airflow uniform distribution device and pulverized coal furnace

The invention discloses an airflow uniform distribution device and a pulverized coal furnace applying the airflow uniform distribution device.The airflow uniform distribution device comprises a main flow pipe, an inner barrel, branch flow pipes and flow disturbing assemblies, and an airflow channel penetrating through the main flow pipe is formed in the main flow pipe; the inner cylinder is arranged in the main flow pipe and arranged on the peripheral side of part of the airflow channel, one end of the inner cylinder is connected with one end of the main flow pipe, and a set interval is formed between the peripheral side of the inner cylinder and the inner wall of the main flow pipe so as to limit an annular cavity; the branch flow pipes extend in the radial direction of the main flow pipe, and the branch flow pipes communicate with the annular cavity so as to be suitable for introducing direct flow air flow into the peripheral side of rotational flow air flow in the inner cylinder through the annular cavity;