Sefton Central Labour MP Bill Esterson said the Tory-Lib Dem Government's "unfair and disproportionate cuts" are pushing more and more children in Sefton into poverty and leaving those in need without help.
Data collected last year shows half of Bootle children live in poverty while figures for neighbouring constituency Sefton Central show just one in 10 live in poor households.
Sefton Central has 1,637 children that live in poverty, which makes up 10% of its population.
It also shows that there are 14 times as many children living in poverty in Bootle's Linacre ward, with1,506, than Formby's Harington, which has just 110.
Other wards with low child poverty rates include Blundellsands, Park and Sudell (Lydiate and Maghull) and Ravenmeols (Formby).
Figures back up popular assumption whereby the south of the borough is significantly worse off in terms of life expectancy, health matters and now child poverty than the rest of Sefton.
Areas that had the five highest child poverty rates were all in the Bootle constituency with 50% of children in Linacre ward suffering from poverty and 39% in nearby Derby ward.
Sefton's borough average works out at 20% child poverty with 11,500 youngsters living in conditions with less than 60% below the median income.
Bill said: "The cuts we are seeing being implemented by the Tories and Lib Dems are hurting the poorest in society while they're giving millionaires tax cuts.
"The poorest are being targeted by this government to pay for the greed of the bankers who caused the country's financial crisis.
"The Tories and Lib Dems are burdening those who can least afford it with paying for the sins of the banking industry. They are hitting families, hitting children, hitting the poorest.
"A family with two children, on the minimum wage, earning just £200 a week, will lose £320 next year as a result of the Tory-Lib Dem’s cuts to tax credits. Bankers caused this crisis, but the bankers are still getting their bonuses and are not being held to account.
"But those who didn't cause the crisis are being hit the hardest to pay for the mistakes of the bankers.
"It simply goes to show that the Tories and Lib Dems are looking after the wealthy while hitting ordinary working people hard. It is unfair and it is immoral.
"While Sefton Council has received £250 cuts per person, the wealthier North Dorset council has been hit with just £1.50 cuts per person. There is no justice to these cuts targeted at the poorest."
Bill said another example of how the poorest are being hit is by the introduction of the Bedroom Tax - which forces people living in social housing to pay for each spare bedroom in their home.
Bill said: "If we need any clearer indication of the contempt this Tory-Lib Dem Government has for people on low incomes, then we need look no further than the introduction of the Bedroom Tax which will be forcing people out of their own homes from April.
"The elderly and young families will be affected by this. Young families with young children who are already on a low income and who will have money taken away from them.
"Young families who are already struggling to make ends meet.
"The Tories and Lib Dems say we are all in this together. Tell that to the families who are struggling to eat. Tell that to the families struggling to heat their homes. Tell that to the families who are living below the poverty line."