Nick Smith says the Speaker "had no business" blocking the introduction of his drug testing Bill and name and suspend him from Parliament.
The National MP sought leave during Wednesday's general debate to introduce a Bill to change roadside drug testing laws.
It was rejected by Speaker Trevor Mallard, who said he was "very unhappy" with Smith and his approach. Smith interrupted to say he was "standing up for my constituents".
After he was asked to leave the House by Mallard, Smith accused Mallard of being "soft on drugs, like the Government".
The Speaker ordered Smith to return, named him for "grossly disorderly conduct", then asked if he should be suspended from the House. A party vote confirmed his 24-hour suspension.
In a strongly worded statement, Smith says the Speaker was out of order.
"It was highly unusual for the Speaker to intervene and block the introduction of National's Bill on roadside drug testing. It was normal for the Speaker to put such leave to the House.
"The Speaker had no business in blocking the introduction of the Bill that would have made out roads safer, particularly with the Government liberalising access to drugs. It is worse that he has named me and removed me from doing my job."
Later on Wednesday, Smith told Magic Talk's Ryan Bridge the incident was "very disappointing".
"The substantive issue in Parliament, as is long-standing practice for my 29 years in this place, is that you can seek the leave of Parliament to introduce a Bill," he explained.
"Now what was bizarre is that that leave can be put to the House, and the House can either object or agree to it. But the Speaker, who is meant to be neutral, objected to the Bill being introduced.
"I took offence at that. I've never seen that happen in 29 years. He's not meant to get into the debate.
"When I objected, he named me, and I've been prohibited from doing my job in Parliament for 24 hours."
Smith condemned the Speaker's actions as overly partisan, claiming he stepped out of his designated neutral role.
"I think he has done the institution of Parliament a disservice," he said.
"I don't think Trevor likes it when National calls Ministers out for saying things that are untrue."
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