"The minister was admitted today after he complained of chest pain," hospital officials said.
A relative of Solanki said he was not keeping well and had to be admitted to a hospital.
In September, the Gujarat High Court had upheld the Gujarat Governor's decision to grant sanction to prosecute the Fisheries minister in the alleged Rs 400 crore fishing contract scam.
Opposition Congress had demanded resignation of Solanki as well as that of Chief Minister Narendra Modi after the court verdict.
