Connector and connector assembly

The utility model provides a connector and a connector assembly. The connector includes an insulating housing and a terminal held in the insulating housing. The insulating shell comprises a main body part which is provided with a first end along the length direction of the main body part and a second end opposite to the first end; and at least one guide structure. The guide structure includes a guide groove formed at a first end of the main body portion and extending in a direction perpendicular to the main body portion, and a guide post formed at a second end of the main body portion, in which the guide groove extends in a direction perpendicular to the main body portion when the connector is mated with another connector completely identical thereto, and the guide post extends in a direction perpendicular to the main body portion. And the guide column is suitable for being jointed with the guide groove of the other connector. The guide columns and the guide grooves of the connector are designed in a staggere