A Bluetooth audio system for an umbrella, the umbrella comprising: a column; an upper nest having a top, the upper nest being attached to the column; a lower nest having a bottom, the lower nest being mounted on the column; a plurality of rods connected to the upper nest; a plurality of LED light bars mounted on the plurality of rods; a solar panel having an output end mounted on the top of the upper nest; and a housing having a bottom surface detachably mounted at the bottom of the lower nest of the umbrella; wherein the Bluetooth audio system further comprises a battery having an input end disposed inside the housing; and a speaker disposed inside the housing; the housing has a conductive interface electrically connected to the output end of the solar panel and the input end of the battery; a lamp plate with a plurality of lamps inside is connected to the bottom surface of the housing; and a Bluetooth audio switch and a lighting switch for controlling the lamps inside the lamp plate and the plurality of LED light bars are mounted on the housing; wherein the housing comprises a left half-annular housing with two vertical surfaces and a right half-annular housing with two vertical surfaces, the left half-annular housing and the right half-annular housing are positioned with the bottom of the lower nest with each vertical surface of the left half-annular housing correspondingly facing and positioned with one vertical surface of the right half-annular housing, forming a central hole for the column to pass through; wherein one vertical surface of the left half-annular housing and one vertical surface the right half-annular housing are movably hinged with each other through a hinge, and the other vertical surface of the left half-annular housing and the other vertical surface the right half-annular housing are positioned with each other through a magnet; the lamp plate comprises a left half-annular lamp plate and a right half-annular lamp plate respectively connected to the bottom surfaces of the left half-annular housing and the right half-annular housing. a column; an upper nest having a top, the upper nest being attached to the column; a lower nest having a bottom, the lower nest being mounted on the column; a plurality of rods connected to the upper nest; a plurality of LED light bars mounted on the plurality of rods; a solar panel having an output end mounted on the top of the upper nest; and a housing having a bottom surface detachably mounted at the bottom of the lower nest of the umbrella; wherein the Bluetooth audio system further comprises a battery having an input end disposed inside the housing; and a speaker disposed inside the housing; the housing has a conductive interface electrically connected to the output end of the solar panel and the input end of the battery; a lamp plate with a plurality of lamps inside is connected to the bottom surface of the housing; and a Bluetooth audio switch and a lighting switch for controlling the lamps inside the lamp plate and the plurality of LED light bars are mounted on the housing; wherein the housing comprises a left half-annular housing with two vertical surfaces and a right half-annular housing with two vertical surfaces, the left half-annular housing and the right half-annular housing are positioned with the bottom of the lower nest with each vertical surface of the left half-annular housing correspondingly facing and positioned with one vertical surface of the right half-annular housing, forming a central hole for the column to pass through; wherein one vertical surface of the left half-annular housing and one vertical surface the right half-annular housing are movably hinged with each other through a hinge, and the other vertical surface of the left half-annular housing and the other vertical surface the right half-annular housing are positioned with each other through a magnet; the lamp plate comprises a left half-annular lamp plate and a right half-annular lamp plate respectively connected to the bottom surfaces of the left half-annular housing and the right half-annular housing.