diff --git a/Makefile b/Makefile
index ffd4922..74b95db 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ fmt:
 	go fmt ./...
 
 vet:
-	go vet ./..。
+	go vet ./...
 
 test:
 	go test ./... -cover -coverprofile=coverage -covermode=atomic -race -v
diff --git a/id_validator_basic.go b/id_validator_basic.go
new file mode 100644
index 0000000..5b3bdd3
--- /dev/null
+++ b/id_validator_basic.go
@@ -0,0 +1,73 @@
+package idvalidator
+
+import (
+	"errors"
+	"strconv"
+	"time"
+
+	"github.com/spf13/cast"
+)
+
+// BasicIdInfo 不含地址码的身份证信息
+type BasicIdInfo struct {
+	Birthday      time.Time
+	Constellation string
+	ChineseZodiac string
+	Sex           int
+	Length        int
+	CheckBit      string
+}
+
+// IsValidBasic 验证身份证号除地址信息之外的合法性
+func IsValidBasic(id string) bool {
+	code, err := generateCode(id)
+	if err != nil {
+		return false
+	}
+
+	// 检查顺序码、生日码、地址码
+	if !checkOrderCode(code["order"]) || !checkBirthdayCode(code["birthdayCode"]) {
+		return false
+	}
+
+	// 15位身份证不含校验码
+	if code["type"] == "15" {
+		return true
+	}
+
+	// 校验码
+	return code["checkBit"] == generatorCheckBit(code["body"])
+}
+
+// GetBasicInfo 获取除地址信息之外的身份证信息
+func GetBasicInfo(id string) (BasicIdInfo, error) {
+	// 验证有效性
+	if !IsValidBasic(id) {
+		return BasicIdInfo{}, errors.New("invalid ID card number")
+	}
+
+	code, _ := generateCode(id)
+
+	// 生日
+	cst, _ := time.LoadLocation("Asia/Shanghai")
+	birthday, _ := time.ParseInLocation("20060102", code["birthdayCode"], cst)
+
+	// 性别
+	sex := 1
+	order, _ := strconv.Atoi(code["order"])
+	if (order % 2) == 0 {
+		sex = 0
+	}
+
+	// 长度
+	length := cast.ToInt(code["type"])
+
+	return BasicIdInfo{
+		Birthday:      birthday,
+		Constellation: getConstellation(code["birthdayCode"]),
+		ChineseZodiac: getChineseZodiac(code["birthdayCode"]),
+		Sex:           sex,
+		Length:        length,
+		CheckBit:      code["checkBit"],
+	}, nil
+}
diff --git a/id_validator_basic_test.go b/id_validator_basic_test.go
new file mode 100644
index 0000000..07817f8
--- /dev/null
+++ b/id_validator_basic_test.go
@@ -0,0 +1,36 @@
+package idvalidator
+
+import (
+	"testing"
+)
+
+// go test -v -cover -coverprofile=cover.out
+// go tool cover -func=cover.out
+// go tool cover -html=cover.out
+func TestIsValidBasic(t *testing.T) {
+	errIds := []string{
+		"44030819990110",     // 号码位数不合法
+		"440308199902301512", // 出生日期码不合法
+		"440308199901101513", // 验证码不合法
+		"610104620932690",    // 出生日期码不合法
+		"11010119900307867X", // 校验位不合法
+		"TES12345678901 j",   // 特殊字符格式不合法
+	}
+	for _, id := range errIds {
+		if IsValidBasic(id) {
+			t.Errorf("ID must be invalid.: %s", id)
+		}
+	}
+}
+
+func TestGetInfoBasic(t *testing.T) {
+	_, e1 := GetBasicInfo("440301197110292910")
+	if e1 != nil {
+		t.Errorf("`e1` must be nil.: %v", e1)
+	}
+
+	_, e2 := GetBasicInfo("500154199302305886")
+	if e2 == nil {
+		t.Errorf("`e2` must not be nil.: %v", e2)
+	}
+}