The invention discloses a bidirectional wireless electric energy transmission system based on a PT symmetry principle. The circuit comprises a primary side circuit and a secondary side circuit. The primary side circuit comprises a primary side symbol variable resistor, a primary side tuning capacitor, a primary side coil and a primary side loop equivalent internal resistor which are connected in series; and the secondary side circuit comprises a secondary side symbol variable resistor, a secondary side tuning capacitor, a secondary side coil and a secondary side loop equivalent internal resistor which are connected in series; wherein the primary side symbol variable resistor comprises a primary side AC controlled voltage source and a primary side control module which are connected with each other, and the secondary side symbol variable resistor comprises a secondary side AC controlled voltage source and a secondary side control module which are connected with each other. The power transmission direction can be flexibly changed by controlling symbols of primary and secondary side symbol variable resistors, the bidirectional transmission of energy is realized, and the energy can be transmitted in the space. Moreover, in a time symmetry region, the constant transmission efficiency and output power can be realized, and the power divider has very strong anti-offset capability and has obvious advantages in practical application.