The invention discloses a micro-display eye lens, a head-mounted eye lens system and head-mounted visual equipment. The micro-display eye lens comprises a first positive lens, a second positive lens and a third negative lens. The first positive lens, the second positive lens and the third negative lens are successively arranged along a light incident direction. The first positive lens is a Fresnel lens and possesses a first surface facing an image space and a second surface which is protruded towards an object space. The first surface is a Fresnel surface possessing positive focal power. The second positive lens possesses a third surface which is protruded towards the image space and a fourth surface facing the object space. The fourth surface is a plane. The third negative lens possesses a fifth surface which is concaved towards the object space and a sixth surface which is concaved towards the object space. An optical system in the technical scheme adopts a plano-convex lens of spherical glass, a negative lens of an aspherical plastic and the Fresnel lens. Under the condition that imaging quality of the system is guaranteed, demands of miniaturization, a light weight and a large angle of visual field are realized simultaneously.