The invention discloses an electric rotating table under vacuum low-temperature environment. The electric rotating table mainly comprises a rotating table bracket, a rotating table moving disk, a rotating table fixed disk, a main shaft, a motor, a flexible shaft, a
bevel gear transmission mechanism, a conducting ring, a
thermal protection device, a wall penetrating sealing unit and a
control system. According to the electric rotating table disclosed by the invention, a driving motor is placed outside a
space environment simulation chamber, the power is transmitted into the
simulation chamber by a
metal bellows in the wall penetrating sealing unit, and the flexible shaft is used for being coupled with the main shaft of the rotating table in the
simulation chamber, so that the
continuous rotation of the rotating table is realized, and an
electricity supply channel and a testing
signal transmission channel are provided for a tested product placed on the rotating table through the conducting ring; and the
control system is connected with the conducting ring through a wall penetrating connector, and is used for supplying
electricity to the product and acquiring a testing
signal and a
signal of a rotating table sensor, and adjusting the output power of the motor to control the rotating speed and the positioning angle of the rotating table.