Joint filling device for building construction

The utility model discloses a joint filling device for building construction, which comprises a storage cylinder, a tiling structure is arranged on one side of the outside of the storage cylinder, the tiling structure comprises a storage rack, a first sliding rod is arranged on the inner side of the storage rack, a sliding block supporting rod is arranged outside the first sliding rod in a sliding manner, and the sliding block supporting rod is arranged on the outer side of the storage rack. A first spring is arranged between one side of the sliding block supporting rod and one end of the inner side of the storage rack, a scraping plate is fixedly arranged on the inner side of one end of the sliding block supporting rod, a set of sliding groove plates are fixedly arranged at the top of the storage rack, and limiting plates are arranged on the inner sides of the sliding groove plates in a sliding mode. According to the joint filling device for building construction, due to the arrangement of the tiling structu