The invention relates to the field of industrial machinery, in particular to a method for installing travelling crane trolley lines in workshops. The method comprises the following steps of utilizing a Z-shaped trolley line bracket mounting mold to mount a trolley line bracket and utilizing a trolley line straightening detector to straighten a trolley line. With the technical proposal, the suspension cage construction operation of constructors is remarkably reduced, the construction safety is improved, installation quality problems caused by artificial measurement errors are reduced, the precision of trolley line installation is improved, construction efficiency is remarkably improved, and construction cost is reduced.