The present invention discloses a continuous reforming reactor material sealing apparatus with a material discharge hopper, and a method. The apparatus comprises: an upper portion material hopper and a reactor, wherein the upper portion material hopper is arranged above the reactor and is connected with the reactor through catalyst material legs, and the lower portion of the reactor is provided with a material discharge hopper forming an integrated structure with the reactor. The method comprises that: a reaction material sequentially enters the reactor, air distribution channels and an air collection channel, and then leaves the reactor from a reaction product outlet; a catalyst enters the upper portion material hopper and then enters the reactor; hydrogen (or nitrogen) enters the upper portion material hopper, and part of the hydrogen (or nitrogen) enters the reactor along with the catalyst in the catalyst material legs; and hydrogen (or nitrogen) enters the material discharge hopper, such that part of the hydrogen (or nitrogen) enters the reactor from material discharge diversion plates. According to the present invention, the catalyst conveying system entering/leaving the continuous reforming reactor is effectively sealed, such that the reaction material can not enter the catalyst cycle conveying system so as to meet requirements of normal operation and safe production.