The invention discloses an interior and exterior combined heating-balancing integrated topology and method of an electric vehicle power battery. The interior and exterior combined heating-balancing integrated topology is characterized in that each single battery is connected in parallel with an MOSFET switch, and cooling fins of the MOSFET are connected to surfaces of the single batteries via a heat conduction device. The interior and exterior combined heating-balancing integrated topology has the beneficial effects that the interior and the exterior of the battery can be simultaneously heatedand passively balanced without any external power supply and equipment, and the interior and exterior combined heating-balancing integrated topology has the advantages of small size, low cost and thelike and is easy to achieve and has important engineering application value in low-temperature heating and balancing of an electric vehicle power battery pack.