Eastwood began brightly Belper goalkeeper having to tip over a cross from Jak Lightly.
Deadlock was broken in the 14th minute a long throw form Oliver Buxton was flicked on by Matt Brian and hammered into the roof of the goal from Tim Adcock.
On the half hour mark it was two a well worked short corner, Shaun Roberts delivered a peach of a ball for Oliver Buxton to have a simple header.
HT Belper 0-2 ECFC
End to end stuff for the first half an hour no one really getting a foot hold in the game until Warren Hatfield jinxed his way through into the box to slot past the helpless Belper keeper for Hatfield's 9th goal of the season.
The win was sealed when Karl Munton made it 4 two minutes form time.
First clean sheet in four and Eastwood first triumph over Belper United in five attempts.
ECFC Team
1 Andy Fretwell
2 Oliver Buxton
3 Ross Marriott
4 Shaun Roberts
5 Lee Bull
17 Matt McCaul
7 Tim Adcock
8 Daniel Guild
9 Matt Brian
10 Warren Hatfield
11 Jak Lightly
12 Karl Munton
14 Ashley Foster
15 Luke Coxon
16 Jake Danby
6 Jack Havron
Man Of The Match: Shaun Roberts