A projection apparatus comprising: a first light-emitting element (11, 41) configured to emit a first waveband light; a phosphor wheel (40, 45) comprising a first section (401, 451), a second section, a first phosphor agent provided on said first section (401, 451), and a second phosphor agent provided on said second section, said phosphor wheel (40, 45) being configured to receive said first waveband light, convert by said first phosphor agent said first waveband light into a third waveband light, and direct said third waveband light to an optical path; characterized in that a second light-emitting element configured to emit a second waveband light to said optical path, wherein said first waveband light and said second waveband light are lights within the same waveband; an image processing device is provided on said optical path, said image processing device being configured to receive said third waveband light and separate said third waveband light into a green light and a red light, wherein said green light, said red light, and said second waveband light are projected as an image in a color separation or time division manner; and a dichroic element arranged at the front-ended of said optical path, wherein said second waveband light is permitted to be transmitted through said dichroic element, and said third waveband light is reflected by said dichroic element; wherein an emergence direction of said first waveband light from said first light-emitting element (11, 41) and an emergence direction of said second waveband light from said second light-emitting element are different, so that an emergence direction of said second waveband light from said dichroic element and an emergence direction of said third waveband light from said dichroic element are identical; wherein a waveband of said third waveband light is broader than a waveband of said first waveband light, and wherein said waveband of said third waveband light covers a waveband of said green light and a waveband of said red light, wherein said first phosphor agent and said second phosphor agent have different compositions, wherein by said first phosphor agent and said second phosphor agent, said first waveband light is converted into two kinds of said third waveband light, and wherein said two kinds of said third waveband light are time-sequentially directed to said optical path. a first light-emitting element (11, 41) configured to emit a first waveband light; a phosphor wheel (40, 45) comprising a first section (401, 451), a second section, a first phosphor agent provided on said first section (401, 451), and a second phosphor agent provided on said second section, said phosphor wheel (40, 45) being configured to receive said first waveband light, convert by said first phosphor agent said first waveband light into a third waveband light, and direct said third waveband light to an optical path; characterized in that a second light-emitting element configured to emit a second waveband light to said optical path, wherein said first waveband light and said second waveband light are lights within the same waveband; an image processing device is provided on said optical path, said image processing device being configured to receive said third waveband light and separate said third waveband light into a green light and a red light, wherein said green light, said red light, and said second waveband light are projected as an image in a color separation or time division manner; and a dichroic element arranged at the front-ended of said optical path, wherein said second waveband light is permitted to be transmitted through said dichroic element, and said third waveband light is reflected by said dichroic element; wherein an emergence direction of said first waveband light from said first light-emitting element (11, 41) and an emergence direction of said second waveband light from said second light-emitting element are different, so that an emergence direction of said second waveband light from said dichroic element and an emergence direction of said third waveband light from said dichroic element are identical; wherein a waveband of said third waveband light is broader than a waveband of said first waveband light, and wherein said waveband of said third waveband light covers a waveband of said green light and a waveband of said red light, wherein said first phosphor agent and said second phosphor agent have different compositions, wherein by said first phosphor agent and said second phosphor agent, said first waveband light is converted into two kinds of said third waveband light, and wherein said two kinds of said third waveband light are time-sequentially directed to said optical path.