The utility model relates to a novel diffusion ware of quick -acting nitrogen of survey soil belongs to diffusion experiment technical field, novel diffusion ware of quick -acting nitrogen of survey soil including diffusion ware lid, diffusion ware body, diffusion ware lid includes tenon fourth of the twelve earthly branches a, flange, the flange outside is tenon fourth of the twelve earthly branches a, including inner ring wall, outer rampart, tenon fourth of the twelve earthly branches b, ring baffle, interior rampart encloses into the inner chamber of diffusion ware body on the diffusion ware body, the domain formation that presss from both sides spreads the exocoel of ware body between outer rampart and the interior rampart, the height that highly is less than outer rampart of interior rampart, the top department of interior rampart is equipped with the ring baffle, the external diameter of rampart in the external diameter of ring baffle is greater than. The utility model discloses using outer rampart and interior rampart to separate inner chamber and exocoel, having solved traditional diffusion ware liquid drop when filling solution and splashed, mistress solution phase each other pollutes in resulting in, leads to the fact the deviation and the repeated experiment of experimental result, and the problem of inconvenient independent survey inner room absorption liquid.