diff --git a/condition.go b/condition.go
new file mode 100644
index 0000000..c8cc5d3
--- /dev/null
+++ b/condition.go
@@ -0,0 +1 @@
+package crontab
diff --git a/condition_test.go b/condition_test.go
new file mode 100644
index 0000000..3054afa
--- /dev/null
+++ b/condition_test.go
@@ -0,0 +1,107 @@
+package crontab
+
+import (
+	"strings"
+	"testing"
+)
+
+//xx={xx()},n>f|n > x |{w=5},5<f<8{w=5s;},
+
+// Condition 条件表达式的结构实例
+type Condition struct {
+}
+
+type Cond struct {
+	expr string
+	op   string
+}
+
+func (cond *Cond) Execute() bool {
+	i := 0
+
+	for ; i < len(cond.expr); i++ {
+
+		switch cond.expr[i] {
+		case '(':
+
+		case '<':
+
+		case '>':
+
+		case '=':
+
+		case ' ':
+			i++
+		}
+	}
+
+	return false
+}
+
+// func indexOperator(s string, start int) (start int, end int) {
+// 	return 0, 1
+// }
+
+func parseCond(cond string) {
+	var CondList []Cond
+
+	s := 0
+	i := 0
+	for ; i < len(cond); i++ {
+
+		switch cond[i] {
+		// case '{':
+		// 	// take execute proccess
+		case '|':
+			CondList = append(CondList, Cond{expr: cond[s:i], op: "|"})
+			s = i + 1
+		case '&':
+			CondList = append(CondList, Cond{expr: cond[s:i], op: "&"})
+			s = i + 1
+		case ' ':
+			i++
+		}
+
+	}
+
+}
+
+func parseMethod(expr string) {
+
+}
+
+func parseDefine(v, method string) {
+
+}
+
+func TestBaseCond(t *testing.T) {
+	condExpr := "n>f|n > x |{w=5},{w=5s;}"
+	for _, expr := range strings.Split(condExpr, ",") {
+		// condexpr
+		for i := 0; i <= len(expr); i++ {
+
+			if expr[i] == '{' {
+				s := i - 1
+				for s > 0 {
+					switch expr[s] {
+					case ' ':
+						s--
+					case '=':
+						// 判断 = 定义表达
+						parseDefine(expr[0:s], expr[s+1:])
+					default:
+						// 判断 = 条件表达
+						parseCond(expr[0:i])
+						parseMethod(expr[i:])
+					}
+				}
+				// 判断 = 执行表达
+				parseMethod(expr)
+			}
+
+		}
+
+		// 找不到{ 判断 = 执行表达
+		parseMethod(expr)
+	}
+}