The invention discloses an LED illuminating lamp suitable for extravehicular activities of a spaceman. The lamp is mainly characterized by comprising LEDs, a secondary optical system, a circuit structure and a lamp structure. The secondary optical system 200 mainly consists of a secondary optical base, a quartz lens, a gland and the like, and collects luminous energy from the LEDs from a conical area with a point angle of 140 degrees to conical area with the point angle of 80 degrees. The circuit structure divides 24 LEDs of the LED illuminating lamp into two totally independent groups, and each group of LED devices is subject to a 'four parallel-three series' connection. The lamp structure causes the LED illuminating lamp to evenly light in a range which is minus 80 degrees to plus 80 degrees of the X axis, and thermal radiation heat elimination of the lamp, a regulation block forwardly slants the optical energy emitted from the LEDs and the secondary optical system to Y axis to realize illumination of the illuminating lamp in the area which is about 0 to plus80 degrees of the Y axis.