The invention discloses a portable detachable flexible solar umbrella, and relates to the field of umbrellas. In order to solve the problems that due to the fact that the main part of a silicon battery of a traditional solar umbrella is easy to break, and indistinct cracks are easy to produce, the weight is large, carrying is inconvenient, the seismic capacity is poor, the manufacturing cost is high, and the effect is lowered more or less are solved, and the solar umbrella comprises an umbrella body and a power generation module arranged on the umbrella body. The flexible CIGS thin film battery is arranged on a sunshade, sun shading and the power generation function can be achieved simultaneously, and the solar umbrella has the advantages of being flexible, bendable, light in weight, easy to carry, good in low light performance, safe, easy to maintain and the like.