The invention discloses a semiconductor laser ignition system with a double security design, which belongs to the field of semiconductor laser ignition systems. The semiconductor laser ignition system comprises a singlechip system, a voltage-controlled current source, a laser, a first optical fiber connector, a second optical fiber connector, a laser detonator joint, a laser detonator, a photoelectric detector, an upper computer, a current-limiting resistor, a current-limiting switch and a normally-closed relay, wherein the singlechip system is connected with the upper computer, the voltage-controlled current source, the current-limiting switch, the normally-closed relay and the photoelectric detector respectively; the current-limiting switch is connected in parallel to two ends of the current-limiting resistor; the normally-closed relay is connected in parallel to two ends of the laser; the laser is connected with the voltage-controlled current source, the current-limiting resistor, the current-limiting switch and the first optical fiber connector respectively; the photoelectric detector is connected with the second optical fiber connector; and the laser detonator joint is connected with the laser detonator. In a security mode, static electricity is prevented from puncturing the laser. In a detection mode, the detection light power output by the laser is kept in a safe range. In an ignition mode, the laser can work in a rated state.