The invention discloses a furfural-containing nematicidal composition. The nematicidal composition comprises active components A and B, wherein A is selected from furfural, and B is selected from compounds represented by a formula (I). The composition comprises a common auxiliary agent and the active components A and B, wherein the mass part ratio of the active component A to the active componentB is 2:1-1:3. The active component A and B are compounded according to a certain ratio and have an obvious synergistic effect on nematodes, and the nematicidal composition is suitable for preventing and treating crop nematode diseases caused by the pathogen nematodes, especially for preventing and treating root knot nematode disease of crops. The structural formula of the active component B is asthe follows.