The invention relates to a pale casting dope, which comprises suspension, adhesive and quartz powder, wherein it also comprises a modifying amidon and a fireproof soil; the mass percentages of each component comprise: suspension at 2-4%, adhesive at 1-3%, quartz powder at 60-80%; modifying amidon at 1-3% and the fireproof soil at 20-40%; the modifying amidon can improve the stability of suspension, form reduction gas in the pouring, reduce the oxidization rate of iron and reduce the sane adhesive of casting element; the fireproof soil can improve the stability and fireproof property of dope, with low cost. And the quartz powder and fireproof soil are white or pale yellow, without changing color after being dried; and the amidon will not change color too; when pouring, it is in vacuum, the hydrocarbon will not generate foam and change color. The invention can improve the penetration of sand, to improve the quality of casting element. |