The invention discloses a mold and production equipment for preparing foam sandwich panels. The mold includes a mandrel, a die fixing plate, a die, a punch and a punch fixing plate. Production equipment includes box furnace, tube furnace, stirring paddle, paddle lifting device, adjustable speed motor, temperature regulator for the first temperature zone, temperature regulator for the second temperature zone, temperature regulator for the third temperature zone, box type Furnace temperature regulator, cooling flow rate regulator, mold lifting device, resistance wire, mold, first temperature zone baffle plate, second temperature zone baffle plate, third temperature zone baffle plate. On the basis of the melt foaming method, the present invention realizes one-time molding of closed-cell foam metal sandwich panels by controlling the surface temperature and internal temperature of the melt; For the production of sandwich panels, the production of sandwich panels with different thicknesses can be realized by adjusting the thickness of the gasket between the punch and the die.