The owner of the Gurkha SP4 Mini Market in Brompton High Street, Gillingham, has been fined after the discovery.
Environmental Health Officers made an unannounced visit to the shop on August 23 last year and immediately shut the premises down.
They discovered a widespread infestation, poor cleanliness and a mouse corpse in between packets of mung beans.
Last week shop owner Mrs Prerna Rai appeared at Medway Magistrates’ Court.
She pleaded guilty to five charges in relation to a lack of cleaning and repair, inadequate procedures to control a mouse infestation, food which had been contaminated by mice, no running hot water at the hand wash sink and failure to put in place procedures to manage food safety.
Rai was fined £2,000 and ordered to pay £500 costs as well as a £40 victim surcharge.