To provide a liquid mixing apparatus wherein individual discharge units do not have to be disassembled or washed, or liquid remaining in the discharge units needs not be removed at the time of completion or interruption of work and liquids can be mixed at a prescribed mixing ratio without time lag even if the flow rates of the individual fluids to be supplied to the discharge units fluctuate.

The liquid mixing apparatus comprises a main agent discharge unit 13 and a curing agent discharge unit 14 individually capable of discharging a main agent A and a curing agent B at the individually prescribed rates, and a control part 35 for controlling the main agent discharge unit 13 and the curing agent discharge unit 14 in a manner that the main agent discharge unit 13 and the curing agent discharge unit 14 discharge the main agent A and the curing agent B at the individually prescribed proper rates in order to a prescribed portion 16a on a coating face 16 and the main agent A and the curing agent B are alternately layered and mixed.

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