The invention relates to a novel sand control agent and in particular to a chemical sand control agent suitable for a heavy oil steam thermal production well. The novel sand control agent is prepared from the following components in parts by weight: 30-60 parts of a cementing component, 3-6 parts of a curing agent, 3-6 parts of a film mulching solvent and 1-3 parts of a coupling agent, wherein the cementing component is melamine formaldehyde resin modified bisphenol A type epoxy resin CYD-128; the curing agent is 2-methylimidazole serving as an epoxy resin curing agent; the film mulching solvent is absolute ethyl alcohol and acetone; the coupling agent is a coupling agent KH-550, KH-560 or KH-570. The novel sand control agent has the advantages of good high temperature resistance, good compressive strength, good flexural strength, excellent permeability and strong acid, alkali and salt resistance and can meet the requirements of mechanical strengthens including the compressive strength and the flexural strength on a steam huff-puff oil well in an oil field during mining.