Tris-thenoyltrifluroacetonate of Nd³⁺has been prepared and dissolved in DMF solation with very high concentration, and the contained hydrogen has not been substituted by deuterium. The absorption spectrum, emission spectrum, and fluorescence lifetime of the solution were measured. Very obvious characteristic fluorescence peaks were observed at 898 and 1058 nm. Based on Judd-Ofelt theory, three intensity parameters were obtained: Ω2=4.9×10-20 cm2, Ω4=5.1×10-20 cm2 and Ω6=2.5×10-20 cm2. Line strengths Scal, oscillator strengths fcal, radiative transition probabilities Aed, radiative lifetimes τr and branch ratios β were calculated too. The measured lifetime τ of 1058 nm peak is 460 μs, and that of 898 nm 505 μs. Comparison between theoretically computed radiative lifetime τr (682 μs) and the measured lifetime indicates that the non-radiative transition probability of the solution is very low and the fluorescence quantum efficiency very high. High values of three intensity parameters prove the high asymmetric surroundings of Nd3+, which is important for Nd3+ to absorb the excitation energy. Spectropic quality factor Ω4/Ω6>1 makes radiation at 898 nm stronger than at 1058 nm.