Steel frame column full-bolt horizontal connection joint between module units

The invention discloses a full-bolt horizontal connection node for steel frame columns between module units. A module unit corner post is connected with an adjacent module unit corner post at the top of each layer of structure through a prefabricated connecting plate component, and the prefabricated connecting plate component is fixedly connected with the module unit corner post through a bolt; the prefabricated connecting plate components comprise at least one of the following three components: 1) a cross-shaped prefabricated connecting plate component or a T-shaped prefabricated connecting plate component which is arranged between corner columns of the node area module units; the outer connecting frame is arranged on the outer sides of all module unit corner columns in a node area in a sleeving mode; and the external connection veneer is arranged on the outer side of the node area and is used for connecting two adjacent module unit corner columns. According to the invention, on-site full-bolt simple assembl