The Immigration Department estimates 8.32 million passengers will pass through land, sea and air immigration checkpoints during the Lunar New Year holiday period, up 2.3% on last year.
For outbound traffic the busiest day will be February 6 with an estimated 346,000 passengers leaving Hong Kong.
Inbound traffic will be at its peak on February 10 when 399,000 passengers are expected to arrive.
About 2.35 million passengers, a daily average of 235,000, are expected to pass through Lo Wu control point from February 5 to 14.
Passenger traffic at Lok Ma Chau, Lok Ma Chau Spur Line and Shenzhen Bay control points will also be heavy, with a daily average forecast of 128,000, 109,000 and 78,000 passengers.
Passengers are advised to plan their trips in advance and avoid making journeys during busy periods.
Hong Kong residents needing assistance while travelling outside the city can call the department's hotline (852) 1868.
