The invention discloses a self-cleaning type solar street lamp convenient to maintain, and relates to the technical field of street lamp illumination, the self-cleaning type solar street lamp convenient to maintain comprises a lamp body mechanism, a lamp illumination mechanism, a lamplight
diffusion mechanism and a light adjusting mechanism are arranged in the lamp body mechanism, and the lamplight
diffusion mechanism is sleeved with the lamp illumination mechanism; the light adjusting mechanism is located in the lamp illumination mechanism, and the lamplight
diffusion mechanism is used for adjusting the light
illumination angle. In the hazy weather, the transmission mechanism drives the light diffusion
assembly to rotate by a half circle, the light
ray angle of lamplight can be adjusted, the light
ray penetrability is improved, scattering and absorption of light rays by
haze are reduced, and the lighting effect of a road is ensured; in addition, the light transmitting
assembly and the light expanding
assembly are combined together, the penetrability of lamplight is further improved by changing the
refraction angle of light, and the good illumination effect is kept in hazy weather.