How to Keep a Cat Off the Bed?

When the cat climbs on the bed, promptly lift it down and scold it firmly; cats sensitive to your mood will soon stop. If it jumps on the bed to urinate during heat, spay it after the heat ends to prevent recurrence.

Spray lemon, pomelo or citrus perfume on the bed, as cats are sensitive to those scents and will avoid it. Provide a warm, comfortable cat bed of its own so it stops fixating on your big bed.