A device for analyzing a spreading state of a lubricant in a mixture of particles and lubricant to be tested defining the components used in the fabrication of a tablet or the tablet itself, comprising: an electromagnetic wave output device that outputs an electromagnetic wave having a frequency equal to or higher than 20 GHz and equal to or lower than 500 THz; an optical element that has a total reflection surface, on which the mixture of particles and lubricant to be tested is arranged, for totally reflecting the electromagnetic wave, and causing the mixture of particles and lubricant to be tested to receive an evanescent wave generated on the total reflection surface; an electromagnetic wave detector that detects the electromagnetic wave totally reflected by the total reflection surface; a spectrum deriving unit that derives either a reflectance spectrum of the electromagnetic wave on the total reflection surface or a value based on the reflectance spectrum, based on a detection result provided by the electromagnetic wave detector whereby the reflectance or the value based on the reflectance is dependent upon the frequency of the electromagnetic wave and a manufacturing condition of the mixture of particles and lubricant to be tested; and a characteristic extraction unit that extracts from the spectrum derived by the spectrum deriving unit, in a pre-determined frequency range, the reflectance of the electromagnetic wave on the total reflection surface or a value based on said reflectance, as an extraction result, which is dependent upon the manufacturing condition, wherein: the manufacturing condition is a mixing time during which the particles and the lubricant are mixed with each other; and the absorbance of the electromagnetic wave in the predetermined frequency range is changed by the particles compared with the absorbance of the electromagnetic wave in a frequency range other than the predetermined frequency range, the spread analysis device further comprising, a spreading determination unit that determines the spreading state of the lubricant based on the change in the extraction result extracted by the characteristic extraction unit with respect to a passage of the mixing time. an electromagnetic wave output device that outputs an electromagnetic wave having a frequency equal to or higher than 20 GHz and equal to or lower than 500 THz; an optical element that has a total reflection surface, on which the mixture of particles and lubricant to be tested is arranged, for totally reflecting the electromagnetic wave, and causing the mixture of particles and lubricant to be tested to receive an evanescent wave generated on the total reflection surface; an electromagnetic wave detector that detects the electromagnetic wave totally reflected by the total reflection surface; a spectrum deriving unit that derives either a reflectance spectrum of the electromagnetic wave on the total reflection surface or a value based on the reflectance spectrum, based on a detection result provided by the electromagnetic wave detector whereby the reflectance or the value based on the reflectance is dependent upon the frequency of the electromagnetic wave and a manufacturing condition of the mixture of particles and lubricant to be tested; and a characteristic extraction unit that extracts from the spectrum derived by the spectrum deriving unit, in a pre-determined frequency range, the reflectance of the electromagnetic wave on the total reflection surface or a value based on said reflectance, as an extraction result, which is dependent upon the manufacturing condition, the manufacturing condition is a mixing time during which the particles and the lubricant are mixed with each other; and the absorbance of the electromagnetic wave in the predetermined frequency range is changed by the particles compared with the absorbance of the electromagnetic wave in a frequency range other than the predetermined frequency range, the spread analysis device further comprising, a spreading determination unit that determines the spreading state of the lubricant based on the change in the extraction result extracted by the characteristic extraction unit with respect to a passage of the mixing time. a spreading determination unit that determines the spreading state of the lubricant based on the change in the extraction result extracted by the characteristic extraction unit with respect to a passage of the mixing time.