According to the problems in selection of graduation design for water supply and sewerage engineering major, such as the boundary of graduation project topics, the disjunction between graduation project topics and engineering practices, the blindness and randomness in selecting topics, and the series solutions are as follows, based the topics on engineering examples or the sub-project research topic, closing university-corporation cooperation, beginning the graduation design as early as possible,selecting the good subjects and fostering the key ones, associating across-specialty students or different universities by one systemic graduate design task, reforming the forms of graduation design.