A photovoltaic connection box, comprising: a box body; a plurality of conduction terminals (100, 200) received in the box body; and a plurality of bus bar holding mechanisms provided on the conduction terminals (100, 200), and configured to hold bus bars of a solar panel on the conduction terminals (100, 200), respectively, so as to electrically connect the bus bars to the conduction terminals (100, 200), each bus bar holding mechanisms comprising: a positioning slot formed on the conduction terminal (100, 200) and adapted to position the bus bar inserted therein in place, wherein the positioning slot is defined by a recession and a projection both formed on the surface of the conduction terminal (100, 200); and a pressing elastic sheet mounted on the conduction terminal (100, 200) and adapted to press the bus bar on the conduction terminal (100, 200), so that the bus bar reliably comes into electrical contact with the conduction terminal (100, 200), wherein a base of the pressing elastic sheet is rotatably connected to a surface of the conduction terminal (100, 200), so as to allow the pressing elastic sheet to rotate between a first position and a second position; when the pressing elastic sheet is in the first position, a pressing portion of the pressing elastic sheet is located in the recession so as to press the bus bar inserted in the positioning slot; and when the pressing elastic sheet is in the second position, the pressing portion of the pressing elastic sheet is located outside the recession, so as to allow to insert the bus bar in the positioning slot or pull the bus bar out of the positioning slot, characterized in that a bottom surface of the pressing portion of the pressing elastic sheet is provided with a plurality of projecting ribs separated from each other and adapted to press against the bus bar. a box body; a plurality of conduction terminals (100, 200) received in the box body; and a plurality of bus bar holding mechanisms provided on the conduction terminals (100, 200), and configured to hold bus bars of a solar panel on the conduction terminals (100, 200), respectively, so as to electrically connect the bus bars to the conduction terminals (100, 200), each bus bar holding mechanisms comprising: a positioning slot formed on the conduction terminal (100, 200) and adapted to position the bus bar inserted therein in place, wherein the positioning slot is defined by a recession and a projection both formed on the surface of the conduction terminal (100, 200); and a pressing elastic sheet mounted on the conduction terminal (100, 200) and adapted to press the bus bar on the conduction terminal (100, 200), so that the bus bar reliably comes into electrical contact with the conduction terminal (100, 200), wherein a base of the pressing elastic sheet is rotatably connected to a surface of the conduction terminal (100, 200), so as to allow the pressing elastic sheet to rotate between a first position and a second position; when the pressing elastic sheet is in the first position, a pressing portion of the pressing elastic sheet is located in the recession so as to press the bus bar inserted in the positioning slot; and when the pressing elastic sheet is in the second position, the pressing portion of the pressing elastic sheet is located outside the recession, so as to allow to insert the bus bar in the positioning slot or pull the bus bar out of the positioning slot, characterized in that a bottom surface of the pressing portion of the pressing elastic sheet is provided with a plurality of projecting ribs separated from each other and adapted to press against the bus bar. a positioning slot formed on the conduction terminal (100, 200) and adapted to position the bus bar inserted therein in place, wherein the positioning slot is defined by a recession and a projection both formed on the surface of the conduction terminal (100, 200); and a pressing elastic sheet mounted on the conduction terminal (100, 200) and adapted to press the bus bar on the conduction terminal (100, 200), so that the bus bar reliably comes into electrical contact with the conduction terminal (100, 200), wherein a base of the pressing elastic sheet is rotatably connected to a surface of the conduction terminal (100, 200), so as to allow the pressing elastic sheet to rotate between a first position and a second position; when the pressing elastic sheet is in the first position, a pressing portion of the pressing elastic sheet is located in the recession so as to press the bus bar inserted in the positioning slot; and when the pressing elastic sheet is in the second position, the pressing portion of the pressing elastic sheet is located outside the recession, so as to allow to insert the bus bar in the positioning slot or pull the bus bar out of the positioning slot, characterized in that a bottom surface of the pressing portion of the pressing elastic sheet is provided with a plurality of projecting ribs separated from each other and adapted to press against the bus bar.