The invention discloses a hard rock stone head deep hole slotting and blasting method, relates to the technical field of deading by drilling and blasting methods, and can effectively increase the utilization rate of slotting holes and blast holes to improve the blasting efficiency. The slotting method comprises the following steps: a main slotting hole and a center hole are symmetrically arranged below the intersection of a roadway springing line and a center line; and a secondary slotting hole is formed between the main slotting hole and the center hole. The blasting method comprises the following steps: the main slotting hole, the secondary slotting hole and the center hole are symmetrically arranged below the intersection of the roadway springing line and the center line; cartridges are loaded in the main slotting hole, the secondary slotting hole and the center hole; the main slotting hole, the secondary slotting hole and the center hole are blocked; the center hole and the secondary slotting hole are blasted firstly; and then, the main slotting hole is blasted. The hard rock stone head deep hole slotting and blasting method is suitable for such blasting tunneling engineering as hard rock stone heads, tunnels and caves.