The invention relates to TPU (thermoplastic polyurethanes) synthetic leather. The TPU synthetic leather comprises a base material layer and a polyurethane foaming layer, which are joined in sequence, wherein the base material layer is a nylon ultrafine fiber and aramid fiber blended woven fabric layer; the polyurethane foaming layer is obtained by crosslinking a first prepolymer and a second prepolymer; a crosslinking agent for crosslinking of the first and second prepolymers is trimethylolpropane; in the crosslinking process, the mass ratio of the first prepolymer to the second prepolymer is 1 to (1.5-3.5); nano-titania is added in the first prepolymer and second prepolymer crosslinking process. The TPU synthetic leather has the beneficial effects that the flexible synthetic leather material with excellent mechanical properties can be obtained in a specific proportion by selecting specific polymeric monomers to be crosslinked; excellent mechanical properties and flame retardance are obtained through synergy of the first prepolymer, the second prepolymer, the crosslinking agent, a foaming agent and an anti-ultraviolet agent under the condition of specific composition.