Liquor retailers in Western Australia may soon be able to sell alcohol on Sundays under new proposals from the state government.

The proposals include plans to allow metropolitan liquor stores to open on Sundays and creating a "small bar" licence category to encourage "a more vibrant family-friendly café-style drinking culture".

The state government has insisted that the legislation would also include measures to combat anti-social behaviour and alcohol-related harm.

Western Australia's Racing and Gaming Minister Mark McGowan said the amendments to the Liquor Licensing Act would provide increased choice for consumers, benefit tourism, and a major boost to small business and entrepreneurs.

"Western Australia needs these reforms - our economy is booming, more people are visiting to do business, and the community wants better entertainment options," McGowan said.

"These changes are about introducing a more sensible, safe and diverse drinking culture to Western Australia."

McGowan said the state government has consulted widely on its package of reforms and had received support from a wide range of business, tourism and health advisory groups.

"Consumers in Western Australia have been neglected for far too long and this package of reforms will put their interests first," he said.

The Labor Minister added that he hoped the Liberal Party would support the changes. The Christian Democratic Party opposes the plan to widen the sale of alcohol on Sundays.