Photovoltaic system and splicing method thereof

The invention relates to the technical field of photovoltaics, and particularly discloses a photovoltaic system and a splicing method thereof. The photovoltaic system comprises a plurality of photovoltaic modules. A sealing element made of rubber is arranged between every two adjacent photovoltaic modules. The sealing piece comprises a connecting part, an attaching part and a matching part. The connecting part is adhered to the lower surface of one photovoltaic module through an adhesive layer and is adjacent to the edge of the photovoltaic module, the attaching part is attached to the edge where the photovoltaic module is arranged, the connecting end of the fitting part is connected with the connecting part, the suspended end of the fitting part protrudes out of the upper surface of the photovoltaic module, and the matching part is arranged on the side, away from the connecting part, of the attaching part. The matching part is provided with an inclined plane, the height of the end, close to the attaching par