The invention discloses a surface acoustic wave temperature sensor reading circuit, comprising a radio frequency switch, a radio frequency transceiving chip and a singlechip, wherein the radio frequency switch is connected with the radio frequency transceiving chip, and the radio frequency transceiving chip is also connected with the singlechip. The surface acoustic wave temperature sensor readingcircuit is low in operation cost, stealing damage rate is low, security is high, and each link can be inquired from a block chain. The surface acoustic wave temperature sensor reading circuit has thebeneficial effects that firstly a phase-locked loop, a power amplifier, a low noise amplifier and a mixer are integrated inside the radio frequency transceiving chip, external dimension is smaller, and miniaturization of a system is benefited; secondly a radio frequency switch is adopted, switching time is shorter, insertion loss is lesser, isolation is good, and a transceiving circuit can shareone antenna; and thirdly, quantity of adopted chips is smaller, loss in a transmission process is reduced, and working efficiency of the reading circuit is improved.