diff --git a/src/pages/signup/signup.ts b/src/pages/signup/signup.ts
index d6477ff..291a878 100644
--- a/src/pages/signup/signup.ts
+++ b/src/pages/signup/signup.ts
@@ -20,15 +20,33 @@ export class SignUpPage {
   constructor(public navCtrl: NavController, public alert:AlertController, public usersService:UsersService) {
   }
 
+  validateFields() : boolean {
+    let regex = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
+
+    if(this.email === "" || this.username === "" || this.password === "" || this.password === "") {
+      this.presentAlert("Preencha todos os campos!");
+      return false;
+    }
+    if(!regex.test(this.email)) {
+      this.presentAlert("E-mail inválido!");
+      return false;
+    }
+    if(this.password !== this.password_confirm) {
+      this.presentAlert("As senhas não combinam!");
+      return false;
+    }
+
+    return true;
+  }
+
   createUser(){
-    if(this.password !== this.password_confirm){
-      this.presentAlert("As senhas não combinam!")
-    }else{
+    if(this.validateFields()){
+
       let user = new User(this.username, this.email, this.password);
       
       this.usersService.create(user).subscribe(
         data => {
-          this.presentAlert("Usuário criado com sucesso!");
+          this.createdUserAlert("Usuário criado com sucesso!");
           this.clearFields();
           this.goSignIn();
         },
@@ -46,6 +64,15 @@ export class SignUpPage {
     this.password_confirm = "";
   }
 
+  createdUserAlert(message) {
+    let alert = this.alert.create({
+      title: 'Sucesso!',
+      subTitle: message,
+      buttons: ['OK']
+    });
+    alert.present();
+  }
+
   presentAlert(message) {
     let alert = this.alert.create({
       title: 'Atenção',