The utility model discloses a modularization is from mounting platform for ocean oil field work, include that every ocean oil field work chunk includes a plurality of functional modules from lift -type basic platform and multinomial ocean oil field work chunk, be equipped with water, oil, gas pipeline joint and multiple modules mount pad in the platform main part, infrastructure is including supplying distribution equipment, loop wheel machine, life building, platform operating system, sea water lift system, fire extinguishing system, rescuing the system of fleing, platform mooring system, crude oil storage cabin, diesel oil system, main power station and emergency electrical power plant, an arbitrary ocean oil field work chunk in install multinomial ocean oil field work chunk on the lift-type basic platform, the functional module of this ocean oil field work chunk passes through releasable connection structure and module mount pad rigid coupling. The utility model discloses a designtheory of " basic platform universalization, function modularization ", after accomplishing a task, towage carries out the module to the pier and changes, can realize the function transform fast economically.