Police accused the 35-year-old man of four armed hold- ups – one in Butler and three in Perth – from January 7-12.
He allegedly brandished a knife in a Butler Boulevard business about 11am on January 7, before fleeing with cash.
On January 10, investigators allege he targeted a Murray Street business in Perth, again threatening staff with a knife and stealing cash about 12.45pm.
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The same afternoon, he allegedly confronted staff at a Wellington Street business and stole a mobile phone when he was refused cash.
Police allege he targeted another Wellington Street outlet on January 12, stealing a mobile phone when told there was no money.
Officers charged the man with aggravated armed robbery and three counts of armed robbery.