The invention provides a permanent magnet surface assembly, including a support body and a permanent magnet capable of adsorbing objects, a groove are provided on the support body, and the permanent magnet is fixed on the inside wall of the groove. The present invention also provides a magnetic connecting system containing the permanent magnet surface assembly, the system including at least one adsorption unit, each adsorption unit including a permanent magnet surface assembly and a magnet adsorption surface assembly, wherein, the magnet adsorption surface assembly is absorbed with the permanent magnet of the permanent magnet surface assembly. The permanent magnet surface assembly and the magnet adsorption surface assembly of the magnetic connecting system combine into an absorption unit by the mutual magnetic force therebetween, and the permanent magnet surface assembly and the magnet adsorption surface assembly can be disassembled and combined at will. The permanent magnet of the permanent magnet surface assembly adopts single-sided multi-polar magnetization, so that the magnetic field inside the groove is strong, and the magnetic field outside the groove is very weak, which is very safe and will not interfere to surrounding electronic equipment. Each adsorption unit can be designed to a unit capable of adsorbing fixed weight, one or more adsorption units can also be added on the object required to support, until the weight capable of carrying the object required to support.