In this paper, we discuss the special structures of dislocations in h.c.p. metals. Two sets of dislocations that lay on two parallel non-basal slip planes will change their shape soasto become zigzag and form regular dislocation structures if the spacing of the slip planes is smaller than one quarter of the distance between the dislocations in the dislocation array. Under TEM observation, these structures appear to be regular dislocation networks that present double lines in one direction. Two of these dislocation networks in α-Ti were observed and others were shoAved schematically.