Abstract: The earthworm living in soil adheres few or no soil. A thin layer of multicomponents mixed fluid surounding its body surface playes a certain effect to reduce adhesion of soil. Because the fluid is a small amount and difficu lt to be collected and which gives some trouble to study on bionic reducing adhesion. Through initial exploring, this paper proposes that the sufficient fluid can be collected by the methods of electrode stimulating, diverting an d soaking, and it creates a good basic condition for studying on the body s urface fluid of earthworms.