The invention discloses wear-resistant high-precision thick-film silver-palladium conductor paste for an oil level sensor, and the silver-palladium conductor paste comprises the following components in percentage by weight: 40%-60% of silver powder, 20%-30% of palladium powder, 1%-5% of pretreated polycrystalline cubic boron nitride powder, 5%-15% of lead-free glass powder and 14%-30% of an organic carrier, wherein the pretreated polycrystalline cubic boron nitride powder is prepared from polycrystalline cubic boron nitride powder through ultrasonic and roasting processes. According to the silver-palladium conductor paste, on the basis that the cost is not increased, the pretreated polycrystalline cubic boron nitride powder is added, the surface hardness of a silver-palladium conduction band is greatly enhanced, the surface abrasion resistance of the silver-palladium conduction band is improved, product electric signal output failure caused by abrasion is reduced, and the display accuracy and the long-term working reliability of the oil level sensor oil meter for the vehicle are improved.