The invention discloses a hydrophobic multifunctional snow-melting agent and a preparation method thereof. The hydrophobic multifunctional snow-melting agent comprises a hydrophobic salts composite snow-melting agent, a hydrophobic composite freezing relieving agent and a hydrophobic composite ice layer softening agent according to the mass ratio of 6-7: 1-2: 1-2; the hydrophobic salts composite snow-melting agent is formed by carrying out slow release treatment and hydrophobic treatment on a salts snow-melting agent successively; the hydrophobic composite freezing relieving agent is formed bycarrying out slow release treatment and hydrophobic treatment on a freezing relieving agent successively; and the hydrophobic composite ice layer softening agent is formed by carrying out slow release treatment and hydrophobic treatment on an ice layer softening agent successively. An ice suppressing coating formed on a road surface by coating has various effects of greatly reducing a freezing point, relieving freezing and softening an ice layer.