Almost all diesel coagulant at lower temperatures are presented as more viscous state, so the coagulant stored at lower temperatures should be heated to above 20 ℃ before use to ensure that it is in solution before adding diesel, and to be added at a temperature above the cloud point of diesel, that is, when there is no wax precipitation from diesel. The addition amount is generally in 0.5‰~1.0‰, but the addition ratio of Lingzhi coagulant is larger.