A dental intraoral observation equipment capable of obtaining a sharp and easily observable image even in a QLF method includes a light source unit including a white light-emitting diode light source and a light-emitting diode light source for producing fluorescence having a peak within a wavelength range of 360 nm to 420 nm, an image taking device which receives a light emitted from the light source unit and converts the light into electrical signals, a first tuning means which shields against or damps a light having a wavelength component of 420 nm or less, a second tuning means which damps the amount of light having a wavelength component of 450 nm to 600 nm, and a signal treating means configured to treat the electrical signals converted by the image taking device, wherein, in a normal observation mode where only the white light-emitting diode light source is turned on, the signal treating means modifies the received light signals in accordance with predetermined relations, and in a QLF mode where only the light-emitting diode light source for producing fluorescence is turned on, the signal treating means modifies the received light signals in accordance with other predetermined relations.
