To provide a working table device dispensing with moving a vent duct each time the working place on the working table is moved and capable of easily performing the change of the layout of a working site.

This working table device having a working table part comprises an air sucking mechanism having an air sucking part on a part of the surface of the working table part and an air discharge part on the lower side of the working table part and formed so that a district between the air sucking part and the air discharge part is formed to be an air transfer route part and a filter part disposed in the air transfer route part. The filter part is formed so as to have a filter function to stop the passing of dust and smoke near the upper part of the working table part and to pass the remaining air therethrough.