The invention relates to a drop-type arrester which includes an insulator; a rainproof cap formed by stamping a stainless steel plate, wherein the rainproof cap has a channel steel shaped structure and an electro-conductive member provided with a clamp groove is arranged in the rainproof cap; a dropping device, which includes a fixed piece, an integrated electro-conductive copper sheet, a first electro-conductive base having two hook grooves, and a second electro-conductive base having a hanging rod. The first electro-conductive base includes a base part that is connected to the lower end of the insulator and two side walls being opposite to each other. The two side walls are stretched towards the right from the base part. The two hook grooves are respectively formed on the two side walls. The fixed piece and the integrated electro-conductive copper sheet are both connected to the base part. One end of the integrated electro-conductive copper sheet is slidingly contacted with the second electro-conductive base. An arrester body is connected to the second electro-conductive base and is hung in the hook grooves in the first electro-conductive base through the hanging rod of the second electro-conductive base. The drop-type arrester has a more stable whole structure by means of the rainproof cap.