A thick film element with high heat conductivity on two sides thereof, comprising a carrier; a thick film coating deposited on the carrier; and a covering layer overlaid on the coating, the thick film coating is a heating material, and a mode of heating is electrical heating, characterized in that the carrier, the thick film coating and the covering layer are selected from a material that fulfills every of following equations: Q 2 ≥ Q 3 ; Q 2 ≥ Q 1 ; and Q 1 = a × Q 3 , Q 2 = b × Q 1 , Q 2 = c × Q 3 ; and 0.1 ≤ a ≤ 150 , 1 ≤ b ≤ 2500 , 100 ≤ c ≤ 10000 ; wherein a calculation formula for Q 1 : Q 1 = λ 1 A T 1 − T 0 b 1 , a calculation formula for Q 2 : Q 2 = λ 2 A T 2 − T 0 b 2 , a calculation formula for Q 3 : Q 3 = λ 3 A T 3 − T 0 b 3 , T 2 < T Minimum melting point of the covering layer ; T 2 < T Minimum melting point of the carrier ; T 0 ≤ 25 ° C ; wherein Q 1 represents a heat transfer rate of the covering layer; Q 2 represents a heat transfer rate of the thick film coating; Q 3 represents a heat transfer rate of the carrier; λ 1 represents a heat conductivity coefficient of the covering layer; λ 2 represents a heat conductivity coefficient of the thick film coating; λ 3 represents a heat conductivity coefficient of the carrier; A represents corresponding to the calculation case a contact area of the thick film coating either with the covering layer or with the carrier; b 1 represents a thickness of the covering layer; b 2 represents a thickness of the thick film coating; b 3 represents a thickness of the carrier; T 0 represents an initial temperature of the thick film heating element before starting to heat up; T 1 represents a surface temperature of the covering layer measured under a stable heating state; T 2 represents a heating temperature of the thick film coating measured under said stable heating state; T 3 represents a surface temperature of the carrier measured under a stable heating state; b 2 ≤ 50 ⁢ μ ⁢ m ; b 3 ≥ b 1 , b 1 ≤ 1 mm , b 3 ≥ 1 ⁢ mm ; T Minimum melting point of the carrier > 25 ° C . wherein Q 1 represents a heat transfer rate of the covering layer; Q 2 represents a heat transfer rate of the thick film coating; Q 3 represents a heat transfer rate of the carrier; λ 1 represents a heat conductivity coefficient of the covering layer; λ 2 represents a heat conductivity coefficient of the thick film coating; λ 3 represents a heat conductivity coefficient of the carrier; A represents corresponding to the calculation case a contact area of the thick film coating either with the covering layer or with the carrier; b 1 represents a thickness of the covering layer; b 2 represents a thickness of the thick film coating; b 3 represents a thickness of the carrier; T 0 represents an initial temperature of the thick film heating element before starting to heat up; T 1 represents a surface temperature of the covering layer measured under a stable heating state; T 2 represents a heating temperature of the thick film coating measured under said stable heating state; T 3 represents a surface temperature of the carrier measured under a stable heating state; b 2 ≤ 50 ⁢ μ ⁢ m ; b 3 ≥ b 1 , b 1 ≤ 1 mm , b 3 ≥ 1 ⁢ mm ; T Minimum melting point of the carrier > 25 ° C . <EOS>