The invention discloses an explosive loading device and an explosive loading method matching with an explosive mixed-loading truck. The explosive loading device is in a tubular structure and formed by serially connecting more than one hollow pipe, and one end of the explosive loading device is plugged by a cap. The explosive loading method includes steps of firstly disposing a detonating bomb in the tubular explosive loading device and guiding out a detonating cord connected with the detonating bomb; secondly, disposing the explosive loading device in a blast hole so that one end, plugged with the cap, of the explosive loading device is disposed at the bottom of the blast hole; and thirdly, disposing an explosive conveying hose of the explosive mixed-loading truck into the explosive loading device, and injecting explosives into the explosive loading device through the explosive conveying hose. By the explosive loading method, explosive loading in a manner of avoiding radial coupling in an outline hole an a buffer hole can be realized when in use of the explosive mixed-loading truck, damage to reserved rock from explosion is reduced, labor intensity of loading explosives on the site is alleviated, and explosion efficiency is improved.