Joint assembly and cleaning tool

The utility model provides a joint assembly and a cleaning tool, the joint assembly is used for the cleaning tool, the joint assembly comprises a first joint used for connecting a first part of the cleaning tool, and the first joint is provided with a first airflow channel; the second connector is connected with the first connector, the second connector is provided with a second airflow channel, the second airflow channel is communicated with the first airflow channel, the second connector can move relative to the first connector so as to change the through-flow sectional area of the second airflow channel, and the second connector is used for being connected with a second part of the cleaning tool.