The invention relates to fuel 
cell metal polar plate 
vacuum coating flow-line equipment and a 
coating method thereof. The flow-line equipment comprises a vacuum cavity set, a support, a transmission mechanism and a PLC 
control system, wherein the vacuum cavity set comprises a furnace-entering cavity, a front 
processing cavity, a first 
coating cavity, a second 
coating cavity, a back 
processing cavity and a furnace-outing cavity which are sequentially connected in a sealed mode and mutually independent, a heating device and an 
ion source device are arranged in the front 
processing cavity, the first coating cavity is used for depositing an element layer of a bottom layer for the fuel 
cell metal polar plate, the second coating cavity is used for depositing a 
corrosion resistant 
conductive coating for the fuel 
cell metal polar plate, and an independent 
vacuum pump is arranged in each cavity; the support is used for arranging the to-be-handled fuel cell metal polar plate; and the transmission mechanism comprises a flow-line guide rail which sequentially penetrates through the cavities in the vacuum cavity set and a power 
assembly driving the support to move along the flow-line guide rail. Compared with the prior art, the flow-line equipment is extractive and simple in structure, convenient to install, reliable in maintenance, high in production efficiency and the like.