The invention relates to a fume sampling probe which mainly consists of a sample pipe, a sample flange, a sample probe mounting plate, a filter, an air cylinder, a standard air inlet, a sample gas outlet, an electric heater, a backblowing air heater, a puller screw, a lever, an internal backblowing hole, an external backblowing hole, a temperature probe, a temperature controller, an electromagnetic valve, a gas-type fitting, a case body and an electrical gas circuit. The invention has the advantages that filter elements of the filter made of resistant material are changed and clean for use alternately, a special backblowing technology method is realized through the electrical gas circuit, the energy consumption is saved, the backblowing effect is good, only one maintenance is needed in one year, the heating temperature can be randomly set, the automatic backblowing period and time can be freely set according to the on-site fume condition, the service life is long, the running is stable and reliable, and the running cost is low, thereby being widely applied to a fume discharge continuous monitoring system of a fixed pollution source in the fume sampling and processing field.