The invention discloses a halogen-free flame-retardant elastomer composite, comprising the following components in percentage by weight: 15-70% of thermoplastic polyester elastomer, 0-50% of styrene elastomer and/or polyolefin elastomer, 15-35% of melamine cyanurate, and 5-20% of phosphate ester flame retardant. The halogen-free flame-retardant elastomer composite has characteristics of low cost and high halogen-free flame-retardant level; the cable prepared by the composite can pass the VW-1 test of UL1581 standard; the halogen-free flame-retardant elastomer composite further has the following characteristics of good mechanical property, good aging resistance, and easiness of extruding molding process, and is very suitable for power lead, data transmission line, and the like of consumer electronic apparatuses.