The invention discloses a temperature measurement method, comprising the following steps: S1: placing a temperature measurement fluid medium in a container, and disposing a liquid level linkage mechanism associated with a liquid level change of the temperature measurement fluid medium on the container; S2; converting the liquid level change of the temperature measurement fluid medium caused by thermal expansion and contraction into a displacement change of the liquid level linkage mechanism through the liquid level linkage mechanism; S3, detecting a displacement change value generated by the liquid level linkage mechanism via a displacement sensor; and S4, converting the displacement change value into a corresponding temperature signal, and outputting the temperature signal. According to the temperature measurement method disclosed by the invention, the volume change of the temperature measurement fluid medium is detected by the mechanical liquid level linkage mechanism to obtain the temperature signal, the temperature measurement precision is high, the temperature measurement stability is good, and the temperature measurement method is not easily affected by environmental factors.