The invention provides a permanent magnetic surface assembly which comprises a first support and a first permanent magnet, wherein a first groove is arranged on the first support, the permanent magnet is fixed in the first groove and provided with a magnetizing surface magnetized in a single side multipolar magnetizing way, and the magnetizing surface is depressed to form a first magnetic groove. The invention also provides a magnetic connecting system using the permanent magnetic surface assembly, which comprises at least one adsorbing unit. Each adsorbing unit comprises a magnetic adsorbing surface assembly and the permanent magnetic surface assembly, wherein the magnetic adsorbing surface assembly is provided with a magnetic conductor, and the magnetic conductor is adsorbed with the first permanent magnet of the permanent magnetic surface assembly. The magnetic adsorbing surface assembly and the permanent magnetic surface assembly of the magnetic connecting system are combined to form the adsorbing unit by mutual magnetic force and can be randomly disassembled or assembled. The first permanent magnet of the permanent magnetic surface assembly adopts single side multipolar magnetization can not disturb the peripheral electronic equipment and be very safe.