Around 6.45 million passengers will pass through Hong Kong's control points during the Easter and Ching Ming festive period from April 2 to 7, up 14% on last year, the Immigration Department estimates.
About 75%, or 4.83 million passengers, are expected to pass through land boundary control points.
The number of outbound passengers using land boundary control points is forecast to peak on April 3, with around 507,000 passengers leaving Hong Kong, while the number of inbound travellers will reach its highest on April 5, with an expected 470,000 people arriving in the city.
Lo Wu is forecast to be the busiest control point, with an estimated 1.91 million passengers passing through.
The department has re-deployed additional staff to reinforce control points to cope with the anticipated heavy passenger traffic.