The invention discloses a method for fast and safely excavating an oil-gas pipeline rock section emergent repair working pit. The method includes: determining hole pitch and array pitch according to rock hardness, determining drilling diameter and depth according to rock crushing effect, and determining use amount of static blasting agent according to the hole pitch, the array pitch and the drilling diameter and depth; cleaning inside and periphery of a drilled hole until the drilled hole is free of water and residues; adding 22-32% of water to the static blasting agent, well mixing to obtain liquid blasting slurry; fast and continuously pouring the blasting slurry into the drilled hole before the blasting slurry starts heating, and tamping with a wooden pole. By introducing the static blasting agent during excavation, the working pit can be excavated fast while safety of oil-gas pipelines is guaranteed, and quality requirements for emergent repair and maintenance of the oil-gas pipelines can be satisfied. In addition, the method is high in practicality and worthy of popularization and application.