The invention discloses a temperature-sensitive graphene oxide and temperature-sensitive element preparation method. The preparation method is characterized in that the preparation method comprises the following steps: adding flake graphite and NaNO3 to concentrated H2SO4, fully stirring under an ice bath condition, adding KMnO4, adjusting the ratio of graphite to KMnO4 to obtain graphene oxide having different oxidation degrees, putting the obtained mixture in the 35DEG C environment, and fully stirring for 2-5h to obtain a brown solution; adding distilled water to the above mixed solution, and reacting at 95DEG C until the color of the mixed solution becomes yellow; adding hydrogen peroxide, carrying out ultrasonic cleaning with distilled water until the pH value of the solution is 7; lyophilizing the above neutral solution to obtain golden powder, and grinding the golden powder to obtain graphene oxide powder; adding PVDF to the graphene oxide powder, and compacting to obtain a wafer; and brush-coating the two surfaces of the wafer with a low-temperature silver paste, and drying to obtain a temperature sensitive element.