The Waroona Agricultural Society has received $116,952 to upgrade the Waroona showgrounds and pavilions.
The funding is part of the Australian government's Regional Agricultural Show Development Grants program.
The money will be used to replace the old bathroom block at the Waroona Showgrounds with new pre-fabricated amenities, including six unisex ambulant toilets and one fully accessible unisex toilet with baby change area.
There are around 580 agricultural shows across the country, attracting almost 6 million Australians every year and contributing $965 million annually to the national economy.
Member for Canning Andrew Hastie said the Waroona Show was an important fixture on the Peel region's calendar.
"Over 19,500 people attended the 89th Waroona Show in 2019," he said.
"Maintaining and upgrading facilities is vital to the show's ongoing success, but that comes at a significant cost.
"The grant backs the Waroona Agricultural Society, who are doing an excellent job, and will support the show's continued success for many years to come."
Minister for Agriculture, David Littleproud, said the grants would benefit both agricultural show societies and regional communities.
"Agricultural shows are the heart and soul of our regional communities," he said.
"They bring and keep communities together, bridge the divide between country and city and provide a key injection into the local economy.
"These events showcase the hard work and innovation that goes into producing Australia's food and fibre.
"Upgrading show facilities means more visitors to these regional events, more local employment, and more purchases for local businesses.
"These grants will help our show societies refurbish their show grounds and facilities, so that when their next event rolls around they will be even more attractive to show goers.
"The Australian government wants to see our agricultural shows continue to thrive, so that they can be enjoyed by Australians for generations to come."