The utility model discloses a low concentration smoke and dust sampling head, chews, connects including the sampling and chew straining a fixer, fixing at the back connecting pipe of straining a fixer rear end of rear end in the sampling, it includes that the urceolus of hollow tubulose and setting are used for the fixed inner tube of straining a section of thick bamboo in the urceolus to strain a fixer, be provided with a plurality of trompils on the wall of inner tube, the dead in line of the axis of inner tube, the axis that the sampling was chewed and back connecting pipe. The utility model has the advantages that: chewing and straining a fixer lug connection through the sampling, avoided original elbow to the loss of granule sampling, improved the sampling precision, the awkward situation that " minimum discharge " engineering does not have accurate test instrument and means has been broken in the sampling of specially adapted low concentration smoke and dust to adopt the removable section of thick bamboo of straining, utilize the current section of thick bamboo of straining conveniently to change and realize standardizedly, ensure sample data's accuracy simultaneously.