The invention discloses a passive temperature chip sensor comprising a temperature sensing chip, an insulating material and an antenna. The insulating material is arranged below the temperature sensing chip and the antenna; and the lower surface of the insulating material is used for being in contact with a to-be-measured object and transmitting the temperature of the to-be-measured object. The antenna connected with the temperature sensing chip through a conductive adhesive is used for receiving an energy signal that is used for providing the electric energy for the temperature sensing chip.The temperature sensing chip is used for measuring the received temperature after receiving the energy signal transmitted by the antenna to form a sensing signal and transmitting the sensing signal tothe antenna. And the antenna is also used for sending the sensing signal. According to the passive temperature chip sensor provided by the invention, no additional power supply is needed; the flexibility of a power equipment monitoring system is improved; and the temperature measurement requirements of field application are met.