PURPOSE: To provide a header pipe of a vacuum type solar heat collector having a structure where an inlet side header pipe is not moved in an outlet side header pipe although the inlet side header pipe is coaxially disposed in the outlet side header pipe.

CONSTITUTION: A header apparatus of a vacuum solar heat collector includes an inlet side header pipe 14 having one end opened and having the other end flattened and closed, the flattened portion 14a being made in contact with the inside of an outlet side header pipe 16.