The invention discloses a solar panel mounted on an electro-tricycle. The solar panel comprises a frame body; moving doors capable of respectively sliding towards both sides are arranged at the upper part of the frame body; solar photovoltaic panels of which angles can be regulated along with light are arranged below the moving doors; regulation devices for regulating the angles of the solar photovoltaic panels are mounted below the solar photovoltaic panels. According to the solar panel disclosed by the invention, a storage battery of the electro-tricycle is reliably, stably and flexibly charged by utilizing a solar photovoltaic panel power generation technology; practicality is high; cruising power of the storage battery of the electro-tricycle can be effectively improved; an assembling mode of the solar photovoltaic panel on a body can be regulated at any time along a parking direction; not only can normal use of the electro-tricycle not be influenced, but also in the using process of the electro-tricycle, a function of a sunshade can be achieved; the solar panel has the characteristics of reasonable design, simple structure, convenience in manufacturing, low cost, high firmness, stability and reliability, attraction and elegance, flexibility and practicality and the like.