The invention discloses a clam worm breeding and harvesting mode. A moving rod is arranged at the top of a clam worm culture pond, a slidable first sliding block is installed on the moving rod, and ascattering motor is arranged at the top of the first sliding block. A scattering device is arranged at the bottom of the first sliding block, a second sliding block is slidably installed at one end ofthe moving rod, and a moving plate is connected at the bottom of the second sliding block. The water body of the clam worm culture pond is divided into a culture area and a collection area. A substrate layer, a heating layer and a heat insulation layer are sequentially slantly arranged in the culture area from top to bottom. A collecting net cage is arranged in the culture area and located belowthe substrate layer. A dissolved oxygen sensor, a water temperature sensor and a pH sensor are disposed in the collection area. The bottom of the collection area is provided with a water discharging hole, a control valve is mounted on the water discharging hole, and a lifting rod is mounted at the other end of the moving rod and controls the depth of the sensor. The clam worm breeding and harvesting mode has the advantages that water quality conditions are grasped in time, the feeding is even and reasonable, the breeding efficiency is high, and during the harvesting process, no harm is causedto clam worms and the recovery efficiency is high.