The invention relates to the technical field of harvesters, and discloses a multifunctional leek harvester which comprises a walking part, a holding harvesting part, a conveying and arraying part and an automatic bundling part, and the holding harvesting part, the conveying and arraying part and the automatic bundling part are arranged on the walking part. The holding harvesting part comprises clamping conveying belts, a shearing device, a holding head, a cutter lifting platform and a first roller, the holding head is located at the front end of the holding harvesting part and comprises two collecting plates, the clamping conveying belts are located behind the holding head, the number of the clamping conveying belts in each pair is at least one, and the two clamping conveying belts in each pair gradually get close from front to back; the clamping conveying belts are arranged on the first roller in a sleeving mode, openings in the front ends of the two clamping conveying belts correspond to openings of the two gathering plates, the shearing device is arranged below the clamping conveying belts and arranged on the tool lifting table, and a lead screw of an arranged first lead screw motor is connected with the tool lifting table. The conveying and arraying part comprises a torsion conveying belt and an arraying conveying belt.