The invention discloses a PCB, a PCB based on a data radio station and the data radio station. The PCB comprises a positive pole access end, a negative pole access end and a top layer and a bottom layer for carrying circuit modules. The top layer and the bottom layer are both provided with a metal surface layer for grounding. The top layer or the bottom layer includes at least two sets of circuitmodules, and the input ends of each set of circuit modules are respectively connected to the positive pole access end. The metal surface layer is separated into a plurality of grounding areas mutuallyinsulated corresponding to the number of circuit modules. The output ends of each set of circuit modules are respectively connected to the corresponding grounding areas. The grounding areas are connected in parallel through connecting bridges and connected to the negative pole access end. The problem of forward and reverse current coupling is relieved or solved, the circuit performance is enhanced, and the circuit operation efficiency is improved.