PURPOSE: A height-adjustable sewage receiver is provided to simply adjust the height of the sewage receiver depending on the state of a road surface and to prevent the installed sewage receiver from becoming rotated. CONSTITUTION: A height-adjustable sewage receiver is composed as follows. A support case(6) having a sewage receiver cover(10) is inserted into a sewage receiver body(4) to be ascendable and descendible. The sewage receiver body has an inlet(16) and an outlet(18). Multiple protrusions and grooves are alternately formed on the outer circumference of the support case. A fixing ring(8) is installed on the top end of the sewage receiver body and fixes the position of the support case.
