The invention discloses a PCB circuitous pattern development exposure method which comprises the following steps: (1) preparing a film, (2) conducting counterpoint exposure, (3) conducting development and (4) conducting cleaning and drying. The PCB circuitous pattern development exposure method has the advantages that in the exposure process, an exposure energy test is firstly carried out, the exposure time is determined, the exposure level is ensured, the exposure is carried out in vacuum, the film is completely attached to a PCB, and the exposure effect is ensured; in the development process, development parameters are strictly controlled, the development effect is ensured, meanwhile, the spraying development is adopted, the development speed is accelerated, then, the pressure washing and hot-blast air drying are carried out, the PCB cleaning speed and drying speed are ensured, and the PCB circuitous pattern development exposure method is quite suitable for flow line production.