Increase in combustion noise and deterioration of exhaust gas performance caused by inter-cylinder correction are prevented, and decrease in temperature rise performance of a diesel particulate removal device caused by inter-cylinder correction is prevented. A fuel injection control device of an engine comprises inter-cylinder correction amount calculation means 5 for calculating, for each cylinder, an inter-cylinder correction amount for correcting by increasing/decreasing a fuel injection amount in each cylinder according to a difference in engine revolution speed between the cylinders, inter-cylinder correction amount division means 6 for dividing the inter-cylinder correction amount into a first divided inter-cylinder correction amount for correcting by increasing/decreasing the basic injection amounts of main injection and sub-injection and a second divided inter-cylinder correction amount for correcting by increasing/decreasing only the basic injection amount of main injection, first correction means 7 for distributing the first divided inter-cylinder correction amount to main injection and sub-injection according to the basic injection amount of main injection and sub-injection, and second correction means 8 for adding the second divided inter-cylinder correction amount to the basic injection amount of main injection.