Avoiding the influence of the near-surface low-velocity zone and the weathering bed, the inter-well seismic exploration can obtain seismic signals with high resolution and high signal-to-noise ratio. The technique has been put into use in recent years. Three problems concerning the inter-well seismic exploration have been discussed in this paper, namely, the formation mechanism and the attenuation method of the inter-well pipe wave, the method for tomographic imagery and that for XSP-CDP imagery. The inter-well data from Luojia and Ken-71 area were successfully processed, with relatively satisfactory tomographic imagery and reflection wave imagery obtained. These results help us understand the transverse spreading of the inter-well velocity and the existence of small faults.