The present invention provides a multi-piece solid golf ball comprising a
core consisting of an inner core and an outer core, and one or more layers
of cover, wherein the inner core has a diameter of 30 to 39.5 mm and a
center hardness in JIS-C hardness of 55 to 70, and is formed from press
molded rubber composition comprising polybutadiene, a co-crosslinking
agent, an organic peroxide and a filler, and the JIS-C hardness at a
distance of 15 mm from the center point of the inner core is higher than
the center hardness by 5 to 20; the outer core has a thickness of 0.3 to
2.0 mm and a surface hardness in JIS-C hardness of 75 to 90, and is formed
from press molded rubber composition, and the surface hardness of the
outer core is higher than the center hardness of the outer core is higher
than the center hardness of the inner core by 10 to 35; and the cover
contains thermoplastic resin as a base resin, and the outmost cover layer
has a thickness of 1.5 to 2.5 mm and a surface hardness in Shore D
hardness of 64 to 72.
