The utility model discloses a multifunctional rack of a trolley type heat treatment furnace. The multifunctional rack comprises a trolley, an annealing furnace body and a travelling track of the trolley, wherein rack bodies are arranged at the two sides of the track outside the furnace body; each rack comprises support frames and work platforms; each work platform is fixed on the corresponding support frame; and a row of cooling fans are arranged on the work platforms. Steel can be cooled by strong wind blown from the axial flow fans on the work platforms of the rack when air cooling is required after coming out of a heat treatment furnace; when an atomization cooling manner is adopted, atomized water which is generated after cooling water is blown about by the axial flow fans can also be sprayed onto the surface of the steel; and the cooling speed of the steel is increased and the mechanical performance of a normalizing material is enhanced. The multifunctional rack is convenient to operate by staff, the furnace charging quality of an annealed material is guaranteed and the furnace charging can be reasonably implemented according to furnace charging amount and a furnace charging manner as technologically required; and since the rack at the outer side is provided with a guardrail playing a guarding role, a worker does not fall off an operating platform when placing the steel and iron gaskets on the surface of the trolley, so that the personal safety of the worker is guaranteed sufficiently.