A method for producing a wavelength conversion member (1; 11) having a first principal surface (1a; 11a) and a second principal surface (1b; 11b) opposed to each other, the wavelength conversion member (1; 11) comprising: a glass matrix; and phosphor particles disposed in the glass matrix, wherein concentrations of the phosphor particles in the first principal surface (1a; 11a) and in the second principal surface (1b; 11b) are lower than concentrations of the phosphor particles in portions 20 μm inward from the first principal surface (1a; 11a) and 20 μm inward from the second principal surface (1b; 11b), and the thickness of the wavelength conversion member (1; 11) is in a range of 0.05 mm to 1 mm, the method comprising the steps of: preparing a slurry containing glass particles to be the glass matrix and the phosphor particles; applying the slurry to substrates, drying the slurry, and allowing the phosphor particles to sediment downward before completion of the drying to obtain first and second green sheets (5A, 5B) in each of which a concentration of the phosphor particles in an under surface (5Ab, 5Bb) is higher than a concentration of the phosphor particles in a top surface (5Aa, 5Ba); and stacking the first and second green sheets (5A, 5B) so as to superpose the under surfaces (5Ab, 5Bb) thereof and bonding and firing the first and second green sheets (5A, 5B) together. a glass matrix; and phosphor particles disposed in the glass matrix, wherein concentrations of the phosphor particles in the first principal surface (1a; 11a) and in the second principal surface (1b; 11b) are lower than concentrations of the phosphor particles in portions 20 μm inward from the first principal surface (1a; 11a) and 20 μm inward from the second principal surface (1b; 11b), and the thickness of the wavelength conversion member (1; 11) is in a range of 0.05 mm to 1 mm, the method comprising the steps of: preparing a slurry containing glass particles to be the glass matrix and the phosphor particles; applying the slurry to substrates, drying the slurry, and allowing the phosphor particles to sediment downward before completion of the drying to obtain first and second green sheets (5A, 5B) in each of which a concentration of the phosphor particles in an under surface (5Ab, 5Bb) is higher than a concentration of the phosphor particles in a top surface (5Aa, 5Ba); and stacking the first and second green sheets (5A, 5B) so as to superpose the under surfaces (5Ab, 5Bb) thereof and bonding and firing the first and second green sheets (5A, 5B) together. preparing a slurry containing glass particles to be the glass matrix and the phosphor particles; applying the slurry to substrates, drying the slurry, and allowing the phosphor particles to sediment downward before completion of the drying to obtain first and second green sheets (5A, 5B) in each of which a concentration of the phosphor particles in an under surface (5Ab, 5Bb) is higher than a concentration of the phosphor particles in a top surface (5Aa, 5Ba); and stacking the first and second green sheets (5A, 5B) so as to superpose the under surfaces (5Ab, 5Bb) thereof and bonding and firing the first and second green sheets (5A, 5B) together.