The invention discloses a blasting control method for slope and adjacent tunnel collaborative blasting construction. The blasting control method comprises the following steps: step I, arranging measuring points according to existing blasting parameters, obtaining actual blasting vibration parameters and establishing a tunnel dynamic finite element model when actual measuring data correspond to a excavated section; step II, determining the safety distance from a tunnel excavated working face to a slope face and the safety distance from a slope excavated working face to tunnel surrounding rock; step III, collaboratively performing slope excavation and tunnel engineering construction, if the tunnel working face advances to the maximal value of the above two safety distances towards the slope direction, pausing tunnel blasting; step IV, transferring all blasting work to slope excavating, and after the slope face at the outlet position of a tunnel is excavated and reinforced, performing the procedure of excavating the tunnel from the slope face into a rock body; step V, excavating the slope near the opening of the subsequent tunnel. The blasting control method has the beneficial effects of efficiency, economy, capability of improving the blasting quality while reducing the influence to the stability of slope rock bodies and the tunnel surrounding rock and the like.